Common Weakness Enumeration
CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
2433 vulnerabilities reference this CWE, most recent first.
CVE-2026-83704 (GCVE-0-2026-83704)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:59 – Updated: 2026-10-20 22:12
VLAI
EPSS
VEX
Title
Microsoft Windows Search Component Elevation of Privilege Vulnerability
Summary
Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:34 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-83704",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-13T20:34:28.027448Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-13T20:44:11.635Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 1607",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 1809",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 21H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19044.7807",
"status": "affected",
"version": "10.0.19044.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 22H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19045.7807",
"status": "affected",
"version": "10.0.19045.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems"
],
"product": "Windows 11 version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows 11 Version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 24H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.9711",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 25H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26200.9711",
"status": "affected",
"version": "10.0.26200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 version 26H1",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.28000.3231",
"status": "affected",
"version": "10.0.28000.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 26H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26300.9711",
"status": "affected",
"version": "10.0.26300.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.2.9200.26434",
"status": "affected",
"version": "6.2.9200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.2.9200.26434",
"status": "affected",
"version": "6.2.9200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 R2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.3.9600.23470",
"status": "affected",
"version": "6.3.9600.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 R2 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.3.9600.23470",
"status": "affected",
"version": "6.3.9600.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2016",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2016 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2022",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.20348.5761",
"status": "affected",
"version": "10.0.20348.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.20348.5761",
"versionStartIncluding": "10.0.20348.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.19044.7807",
"versionStartIncluding": "10.0.19044.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.19045.7807",
"versionStartIncluding": "10.0.19045.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26200.9711",
"versionStartIncluding": "10.0.26200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26100.9711",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.28000.3231",
"versionStartIncluding": "10.0.28000.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.2.9200.26434",
"versionStartIncluding": "6.2.9200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.2.9200.26434",
"versionStartIncluding": "6.2.9200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.3.9600.23470",
"versionStartIncluding": "6.3.9600.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.3.9600.23470",
"versionStartIncluding": "6.3.9600.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26300.9711",
"versionStartIncluding": "10.0.26300.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-10-13T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper link resolution before file access (\u0027link following\u0027) in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-20T22:12:36.423Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Windows Search Component Elevation of Privilege Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83704"
}
],
"title": "Microsoft Windows Search Component Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-83704",
"datePublished": "2026-10-13T18:59:49.602Z",
"dateReserved": "2026-08-31T22:43:34.219Z",
"dateUpdated": "2026-10-20T22:12:36.423Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-83659 (GCVE-0-2026-83659)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-20 22:18
VLAI
EPSS
VEX
Title
Windows User Profile Service Elevation of Privilege Vulnerability
Summary
Improper link resolution before file access ('link following') in Windows User Profile Service allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 00:00 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-83659",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-09T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-14T03:57:48.834Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 1607",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 1809",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 21H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19044.7807",
"status": "affected",
"version": "10.0.19044.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 22H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19045.7807",
"status": "affected",
"version": "10.0.19045.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems"
],
"product": "Windows 11 version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows 11 Version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 24H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.9711",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 25H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26200.9711",
"status": "affected",
"version": "10.0.26200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 version 26H1",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.28000.3231",
"status": "affected",
"version": "10.0.28000.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 26H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26300.9711",
"status": "affected",
"version": "10.0.26300.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.2.9200.26434",
"status": "affected",
"version": "6.2.9200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.2.9200.26434",
"status": "affected",
"version": "6.2.9200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 R2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.3.9600.23470",
"status": "affected",
"version": "6.3.9600.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2012 R2 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "6.3.9600.23470",
"status": "affected",
"version": "6.3.9600.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2016",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2016 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.14393.9612",
"status": "affected",
"version": "10.0.14393.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2019 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.17763.9376",
"status": "affected",
"version": "10.0.17763.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2022",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.20348.5761",
"status": "affected",
"version": "10.0.20348.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26300.9711",
"versionStartIncluding": "10.0.26300.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.17763.9376",
"versionStartIncluding": "10.0.17763.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.20348.5761",
"versionStartIncluding": "10.0.20348.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.19044.7807",
"versionStartIncluding": "10.0.19044.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.19045.7807",
"versionStartIncluding": "10.0.19045.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26200.9711",
"versionStartIncluding": "10.0.26200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26100.9711",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.28000.3231",
"versionStartIncluding": "10.0.28000.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.14393.9612",
"versionStartIncluding": "10.0.14393.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.2.9200.26434",
"versionStartIncluding": "6.2.9200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.2.9200.26434",
"versionStartIncluding": "6.2.9200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.3.9600.23470",
"versionStartIncluding": "6.3.9600.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "6.3.9600.23470",
"versionStartIncluding": "6.3.9600.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-10-13T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper link resolution before file access (\u0027link following\u0027) in Windows User Profile Service allows an authorized attacker to elevate privileges locally."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-20T22:18:02.971Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Windows User Profile Service Elevation of Privilege Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83659"
}
],
"title": "Windows User Profile Service Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-83659",
"datePublished": "2026-10-13T19:00:49.905Z",
"dateReserved": "2026-08-31T22:29:28.071Z",
"dateUpdated": "2026-10-20T22:18:02.971Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-83507 (GCVE-0-2026-83507)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-20 22:17
VLAI
EPSS
VEX
Title
Windows Update Orchestrator Service Information Disclosure Vulnerability
Summary
Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:41 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-83507",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-13T20:41:35.461378Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-13T20:44:24.311Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 21H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19044.7807",
"status": "affected",
"version": "10.0.19044.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"32-bit Systems",
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 10 Version 22H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.19045.7807",
"status": "affected",
"version": "10.0.19045.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems"
],
"product": "Windows 11 version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows 11 Version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7652",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 24H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.9711",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 25H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26200.9711",
"status": "affected",
"version": "10.0.26200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 version 26H1",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.28000.3231",
"status": "affected",
"version": "10.0.28000.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 26H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26300.9711",
"status": "affected",
"version": "10.0.26300.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2022",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.20348.5761",
"status": "affected",
"version": "10.0.20348.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33650",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26300.9711",
"versionStartIncluding": "10.0.26300.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.20348.5761",
"versionStartIncluding": "10.0.20348.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
"versionEndExcluding": "10.0.19044.7807",
"versionStartIncluding": "10.0.19044.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.19045.7807",
"versionStartIncluding": "10.0.19045.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26200.9711",
"versionStartIncluding": "10.0.26200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.22631.7652",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26100.9711",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33650",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.28000.3231",
"versionStartIncluding": "10.0.28000.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-10-13T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper link resolution before file access (\u0027link following\u0027) in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-20T22:17:46.410Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Windows Update Orchestrator Service Information Disclosure Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83507"
}
],
"title": "Windows Update Orchestrator Service Information Disclosure Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-83507",
"datePublished": "2026-10-13T19:00:46.238Z",
"dateReserved": "2026-08-31T15:57:21.154Z",
"dateUpdated": "2026-10-20T22:17:46.410Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82455 (GCVE-0-2026-82455)
Vulnerability from cvelistv5 – Published: 2026-08-29 13:47 – Updated: 2026-09-11 11:26
VLAI
EPSS
VEX
The RubyGems maintainers determined that the reported symlink-following behavior during gem extraction is not a security vulnerability, so no vulnerability exists for this record to describe.
Show details on NVD website{
"containers": {
"cna": {
"providerMetadata": {
"dateUpdated": "2026-09-11T11:26:56.805Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"rejectedReasons": [
{
"lang": "en",
"value": "The RubyGems maintainers determined that the reported symlink-following behavior during gem extraction is not a security vulnerability, so no vulnerability exists for this record to describe."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-82455",
"datePublished": "2026-08-29T13:47:56.760Z",
"dateRejected": "2026-09-11T11:26:56.805Z",
"dateReserved": "2026-08-29T13:22:59.614Z",
"dateUpdated": "2026-09-11T11:26:56.805Z",
"state": "REJECTED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82331 (GCVE-0-2026-82331)
Vulnerability from cvelistv5 – Published: 2026-09-23 06:58 – Updated: 2026-09-23 16:08
VLAI
EPSS
VEX
Title
Apache BuildStream: tar source extraction escape
Summary
Improper link resolution before file access ('link following') vulnerability in the `tar` source plugin of Apache BuildStream running on Python < 3.12 allows malicious source tarballs to write files on the host, with the privileges of the user running BuildStream, via symlinks as part of source fetching.
The impact of this issue is mitigated by:
* BuildStream projects should only use trusted sources in their elements as otherwise the build output can also not be trusted
* Tracking a source tarball pins its SHA256 hash, which prevents MITM attacks of users that are fetching an already tracked project
* When running on Python >= 3.12, BuildStream >= 2.3.0 already makes use of the Python `tarfile` filter functionality, which blocks the symlink escape
Users are recommended to upgrade to version 2.8.1, which fixes this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 14:55 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache BuildStream |
Affected:
0 , ≤ 2.8.0
(semver)
Unaffected: 2.8.1 (semver) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-82331",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-23T14:55:37.367789Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-23T14:55:54.267Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2026-09-23T16:08:58.171Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/09/23/9"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pypi.python.org",
"defaultStatus": "unaffected",
"packageName": "buildstream",
"packageURL": "pkg:pypi/BuildStream",
"product": "Apache BuildStream",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThanOrEqual": "2.8.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.8.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Gjoko Krstic of Zero Science Lab"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper link resolution before file access (\u0027link following\u0027) vulnerability in the `tar` source plugin of Apache BuildStream running on Python \u0026lt; 3.12 allows malicious source tarballs to write files on the host, with the privileges of the user running BuildStream, via symlinks as part of source fetching.\u003cbr\u003e\u003cdiv\u003eThe impact of this issue is mitigated by:\u003c/div\u003e* BuildStream projects should only use trusted sources in their elements as otherwise the build output can also not be trusted\u003cbr\u003e* Tracking a source tarball pins its SHA256 hash, which prevents MITM attacks of users that are fetching an already tracked project\u003cbr\u003e* When running on Python \u0026gt;= 3.12, BuildStream \u0026gt;= 2.3.0 already makes use of the Python `tarfile` filter functionality, which blocks the symlink escape\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 2.8.1, which fixes this issue."
}
],
"value": "Improper link resolution before file access (\u0027link following\u0027) vulnerability in the `tar` source plugin of Apache BuildStream running on Python \u003c 3.12 allows malicious source tarballs to write files on the host, with the privileges of the user running BuildStream, via symlinks as part of source fetching.\nThe impact of this issue is mitigated by:\n\n* BuildStream projects should only use trusted sources in their elements as otherwise the build output can also not be trusted\n* Tracking a source tarball pins its SHA256 hash, which prevents MITM attacks of users that are fetching an already tracked project\n* When running on Python \u003e= 3.12, BuildStream \u003e= 2.3.0 already makes use of the Python `tarfile` filter functionality, which blocks the symlink escape\n\nUsers are recommended to upgrade to version 2.8.1, which fixes this issue."
}
],
"metrics": [
{
"other": {
"content": {
"text": "moderate"
},
"type": "Textual description of severity"
},
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59 Improper link resolution before file access (\u0027link following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-23T06:58:21.546Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/9b342631x7bvtyg0pq7zgywtl2cmy34v"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Apache BuildStream: tar source extraction escape",
"x_generator": {
"engine": "Vulnogram 1.0.3"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-82331",
"datePublished": "2026-09-23T06:58:21.546Z",
"dateReserved": "2026-08-28T14:59:00.996Z",
"dateUpdated": "2026-09-23T16:08:58.171Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82252 (GCVE-0-2026-82252)
Vulnerability from cvelistv5 – Published: 2026-08-28 10:49 – Updated: 2026-08-29 13:38
VLAI
EPSS
VEX
Title
gitoxide before 0.52.1 Repository Boundary Violation via symlinked .gitmodules
Summary
gitoxide before 0.52.1 follows symlinks when reading the worktree .gitmodules file, allowing attackers to inject out-of-repository bytes into submodule metadata. Attackers can create a malicious repository with a symlinked .gitmodules pointing outside the repository tree, causing gitoxide to parse arbitrary external files as submodule configuration and expose attacker-controlled name, path, and url values.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 14:04 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/gitoxide-bef… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.52.1
(semver)
Unaffected: 0.52.1 (semver) |
|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.82.0
(semver)
Unaffected: 0.82.0 (semver) |
Date Public
2026-04-25 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82252",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-28T14:04:05.834255Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T14:04:11.687Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pg4w-g64p-qwhj"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gitoxide",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.52.1",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.52.1",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gix",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.82.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.82.0",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.52.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.82.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "N0zoM1z0"
}
],
"datePublic": "2026-04-25T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "gitoxide before 0.52.1 follows symlinks when reading the worktree .gitmodules file, allowing attackers to inject out-of-repository bytes into submodule metadata. Attackers can create a malicious repository with a symlinked .gitmodules pointing outside the repository tree, causing gitoxide to parse arbitrary external files as submodule configuration and expose attacker-controlled name, path, and url values."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-29T13:38:27.910Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-pg4w-g64p-qwhj)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pg4w-g64p-qwhj"
},
{
"name": "VulnCheck Advisory: gitoxide before 0.52.1 Repository Boundary Violation via symlinked .gitmodules",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/gitoxide-before-0.52.1-repository-boundary-violation-via-symlinked-gitmodules"
}
],
"title": "gitoxide before 0.52.1 Repository Boundary Violation via symlinked .gitmodules",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-82252",
"datePublished": "2026-08-28T10:49:36.897Z",
"dateReserved": "2026-08-28T10:37:51.949Z",
"dateUpdated": "2026-08-29T13:38:27.910Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82248 (GCVE-0-2026-82248)
Vulnerability from cvelistv5 – Published: 2026-08-28 10:49 – Updated: 2026-08-31 18:32
VLAI
EPSS
VEX
Title
gitoxide before 0.33.0 Path Traversal via symlink following
Summary
gix-worktree-state before 0.33.0 (part of gitoxide) allows writing files outside the worktree on Windows. gix_worktree_state::checkout() follows an existing terminal symlink during non-exclusive (incremental) materialization (destination_is_initially_empty: false) when core.symlinks is true. If a symlink entry (mode 120000) is first checked out at a path P pointing outside the worktree, a subsequent incremental checkout of a regular-file entry (mode 100644) at the same path follows the existing reparse point and writes the blob content through the link, overwriting files outside the worktree.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:32 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/gitoxide-bef… | third-party-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.33.0
(semver)
Unaffected: 0.33.0 (semver) |
|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.55.0
(semver)
Unaffected: 0.55.0 (semver) |
|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.49.0
(semver)
Unaffected: 0.49.0 (semver) |
|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.86.0
(semver)
Unaffected: 0.86.0 (semver) |
Date Public
2026-08-02 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82248",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-31T18:32:26.942524Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-31T18:32:54.127Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmm9-4h7q-24c8"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gix-worktree-state",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.33.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.33.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gix-worktree",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.55.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.55.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gix-features",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.49.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.49.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:cargo/gix",
"product": "gitoxide",
"vendor": "GitoxideLabs",
"versions": [
{
"lessThan": "0.86.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "0.86.0",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.33.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.55.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.49.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.86.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "scadastrangelove"
}
],
"datePublic": "2026-08-02T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "gix-worktree-state before 0.33.0 (part of gitoxide) allows writing files outside the worktree on Windows. gix_worktree_state::checkout() follows an existing terminal symlink during non-exclusive (incremental) materialization (destination_is_initially_empty: false) when core.symlinks is true. If a symlink entry (mode 120000) is first checked out at a path P pointing outside the worktree, a subsequent incremental checkout of a regular-file entry (mode 100644) at the same path follows the existing reparse point and writes the blob content through the link, overwriting files outside the worktree."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T10:49:34.165Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-pmm9-4h7q-24c8)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-pmm9-4h7q-24c8"
},
{
"name": "VulnCheck Advisory: gitoxide before 0.33.0 Path Traversal via symlink following",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/gitoxide-before-0.33.0-path-traversal-via-symlink-following"
}
],
"title": "gitoxide before 0.33.0 Path Traversal via symlink following",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-82248",
"datePublished": "2026-08-28T10:49:34.165Z",
"dateReserved": "2026-08-28T10:37:51.949Z",
"dateUpdated": "2026-08-31T18:32:54.127Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82049 (GCVE-0-2026-82049)
Vulnerability from cvelistv5 – Published: 2026-09-14 19:14 – Updated: 2026-10-11 00:39
VLAI
EPSS
VEX
Title
tarfile extraction filters allow file modification and content disclosure via hard link to symlink
Summary
In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 00:00 UTC
CWE
Assigner
References
12 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.22
(python)
Affected: 3.11.0 , < 3.11.17 (python) Affected: 3.12.0 , < 3.12.15 (python) Affected: 3.13.0 , < 3.13.16 (python) Affected: 3.14.0a1 , < 3.14.0b1 (python) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82049",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-15T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T03:56:12.084Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2026-09-14T20:07:50.158Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/09/14/27"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"tarfile"
],
"product": "CPython",
"repo": "https://github.com/python/cpython",
"vendor": "Python Software Foundation",
"versions": [
{
"lessThan": "3.10.22",
"status": "affected",
"version": "0",
"versionType": "python"
},
{
"lessThan": "3.11.17",
"status": "affected",
"version": "3.11.0",
"versionType": "python"
},
{
"lessThan": "3.12.15",
"status": "affected",
"version": "3.12.0",
"versionType": "python"
},
{
"lessThan": "3.13.16",
"status": "affected",
"version": "3.13.0",
"versionType": "python"
},
{
"lessThan": "3.14.0b1",
"status": "affected",
"version": "3.14.0a1",
"versionType": "python"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Jing Qian (https://github.com/Civitasmass)"
},
{
"lang": "en",
"type": "coordinator",
"value": "Stan Ulbrych (https://github.com/StanFromIreland)"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Petr Viktorin (https://github.com/encukou)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"type": "text/html",
"value": "In CPython 3.13 and earlier, the \u003cspan\u003etarfile\u003c/span\u003e\u0026nbsp;module\u0027s \u003cspan\u003edata\u003c/span\u003e\u0026nbsp;and \u003cspan\u003etar\u003c/span\u003e extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree."
}
],
"value": "In CPython 3.13 and earlier, the tarfile\u00a0module\u0027s data\u00a0and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-11T00:39:42.376Z",
"orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"shortName": "PSF"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/python/cpython/issues/157190"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/pull/157191"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/197663d63afed27f66e10e23c194e8a634e60913"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/28f315486b3da0352b9a1de1c3c97f4127ba4771"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/c66df4e70435d257fd488b35ea129c6f317433a8"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/cc1689830c6b9aaddded2fb9f2fe8116867e2c0e"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/cccc7ec30212dba2abef53ce4a2bed112ddb690c"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "tarfile extraction filters allow file modification and content disclosure via hard link to symlink",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"assignerShortName": "PSF",
"cveId": "CVE-2026-82049",
"datePublished": "2026-09-14T19:14:03.873Z",
"dateReserved": "2026-08-27T22:23:05.514Z",
"dateUpdated": "2026-10-11T00:39:42.376Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-81963 (GCVE-0-2026-81963)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:19 – Updated: 2026-10-14 23:14
VLAI
EPSS
VEX
Title
Windows Update Stack Elevation of Privilege Vulnerability
Summary
Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-07 00:00 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9445
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9445
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2954
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
Date Public
2026-09-08 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-81963",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-07T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-09-08",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-81963"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T04:25:46.635Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-81963"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-08T00:00:00.000Z",
"value": "CVE-2026-81963 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"platforms": [
"ARM64-based Systems"
],
"product": "Windows 11 version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7582",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows 11 Version 23H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.22631.7582",
"status": "affected",
"version": "10.0.22631.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 24H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.9445",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 Version 25H2",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26200.9445",
"status": "affected",
"version": "10.0.26200.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
],
"product": "Windows 11 version 26H1",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.28000.2954",
"status": "affected",
"version": "10.0.28000.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33438",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Windows Server 2025 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.26100.33438",
"status": "affected",
"version": "10.0.26100.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33438",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26200.9445",
"versionStartIncluding": "10.0.26200.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.22631.7582",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.22631.7582",
"versionStartIncluding": "10.0.22631.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
"versionEndExcluding": "10.0.26100.9445",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.26100.33438",
"versionStartIncluding": "10.0.26100.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "10.0.28000.2954",
"versionStartIncluding": "10.0.28000.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-09-08T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper link resolution before file access (\u0027link following\u0027) in Windows Update Stack allows an authorized attacker to elevate privileges locally."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en-US",
"type": "CWE"
},
{
"cweId": "CWE-284",
"description": "CWE-284: Improper Access Control",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-14T23:14:33.668Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Windows Update Stack Elevation of Privilege Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81963"
}
],
"title": "Windows Update Stack Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-81963",
"datePublished": "2026-09-08T17:19:13.121Z",
"dateReserved": "2026-08-27T20:58:07.631Z",
"dateUpdated": "2026-10-14T23:14:33.668Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-81727 (GCVE-0-2026-81727)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-08-27 17:43
VLAI
EPSS
VEX
Title
NLTK before 3.10.3 Hardlink File Overwrite via downloader
Summary
NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incr_download methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader directory can create hardlinks pointing to outside-root files that are then overwritten during normal package extraction, mutating files outside the intended install tree.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 17:43 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nltk/nltk/security/advisories/… | vendor-advisory |
| https://www.vulncheck.com/advisories/nltk-before-… | third-party-advisory |
Impacted products
Date Public
2026-08-12 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-81727",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-27T17:43:29.016552Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T17:43:34.469Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/nltk/nltk/security/advisories/GHSA-f794-5jv7-7672"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:pypi/nltk",
"product": "nltk",
"vendor": "nltk",
"versions": [
{
"lessThan": "3.10.3",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.10.3",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.10.3",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-08-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incr_download methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader directory can create hardlinks pointing to outside-root files that are then overwritten during normal package extraction, mutating files outside the intended install tree."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T14:51:19.564Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-f794-5jv7-7672)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/nltk/nltk/security/advisories/GHSA-f794-5jv7-7672"
},
{
"name": "VulnCheck Advisory: NLTK before 3.10.3 Hardlink File Overwrite via downloader",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/nltk-before-3.10.3-hardlink-file-overwrite-via-downloader"
}
],
"title": "NLTK before 3.10.3 Hardlink File Overwrite via downloader",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-81727",
"datePublished": "2026-08-27T14:51:19.564Z",
"dateReserved": "2026-08-27T11:15:29.420Z",
"dateUpdated": "2026-08-27T17:43:34.469Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.