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CERTFR-2026-AVI-0273
Vulnerability from certfr_avis - Published: 2026-03-11 - Updated: 2026-03-11
De multiples vulnérabilités ont été découvertes dans Microsoft Azure. Elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Microsoft | N/A | Azure IoT Explorer versions antérieures à 0.15.14 | ||
| Microsoft | N/A | Microsoft Azure AD SSH Login extension pour Linux versions antérieures à 1.0.033370002 | ||
| Microsoft | N/A | Azure Linux Virtual Machines with Azure Diagnostics extension versions antérieures à 2.1.24 | ||
| Microsoft | N/A | Arc Enabled Servers - Azure Connected Machine Agent versions antérieures à 1.61 | ||
| Microsoft | N/A | Azure MCP Server Tools versions antérieures à 2.0.0-beta.17 |
References
| Title | Publication Time | Tags | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Azure IoT Explorer versions ant\u00e9rieures \u00e0 0.15.14",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft Azure AD SSH Login extension pour Linux versions ant\u00e9rieures \u00e0 1.0.033370002",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Azure Linux Virtual Machines with Azure Diagnostics extension versions ant\u00e9rieures \u00e0 2.1.24",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Arc Enabled Servers - Azure Connected Machine Agent versions ant\u00e9rieures \u00e0 1.61",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Azure MCP Server Tools versions ant\u00e9rieures \u00e0 2.0.0-beta.17",
"product": {
"name": "N/A",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-23662",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23662"
},
{
"name": "CVE-2026-26117",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26117"
},
{
"name": "CVE-2026-26148",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26148"
},
{
"name": "CVE-2026-26118",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26118"
},
{
"name": "CVE-2026-21262",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-21262"
},
{
"name": "CVE-2026-23664",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23664"
},
{
"name": "CVE-2026-26115",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26115"
},
{
"name": "CVE-2026-26121",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26121"
},
{
"name": "CVE-2026-23661",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23661"
},
{
"name": "CVE-2026-23665",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23665"
}
],
"initial_release_date": "2026-03-11T00:00:00",
"last_revision_date": "2026-03-11T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0273",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-03-11T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Microsoft Azure. Elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Azure",
"vendor_advisories": [
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-26117",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26117"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-21262",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-23661",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23661"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-26115",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26115"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-26121",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26121"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-23665",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23665"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-26118",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26118"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-23664",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23664"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-26148",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26148"
},
{
"published_at": "2026-03-10",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft Azure CVE-2026-23662",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23662"
}
]
}
CVE-2026-21262 (GCVE-0-2026-21262)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:04 – Updated: 2026-06-19 18:17
VLAI
EPSS
VEX
Title
SQL Server Elevation of Privilege Vulnerability
Summary
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 00:00 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 (GDR) |
Affected:
13.0.0 , < 13.0.6480.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack |
Affected:
13.0.0 , < 13.0.7075.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3520.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2100.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4460.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2160.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1170.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU 23) |
Affected:
16.0.0.0 , < 16.0.4240.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU 2) |
Affected:
17.0.0.0 , < 17.0.4020.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1105.2
(custom)
|
Date Public
2026-03-10 14:00
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CVE-2026-23661 (GCVE-0-2026-23661)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Azure IoT Explorer Information Disclosure Vulnerability
Summary
Cleartext transmission of sensitive information in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 18:40 UTC
CWE
- CWE-319 - Cleartext Transmission of Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure IoT Explorer |
Affected:
1.0.0 , < 0.15.13
(custom)
cpe:2.3:a:microsoft:azure_iot_explorer:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-23662 (GCVE-0-2026-23662)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Azure IoT Explorer Information Disclosure Vulnerability
Summary
Missing authentication for critical function in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 19:53 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure IoT Explorer |
Affected:
1.0.0 , < 0.15.13
(custom)
cpe:2.3:a:microsoft:azure_iot_explorer:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-23664 (GCVE-0-2026-23664)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:04 – Updated: 2026-06-19 18:17
VLAI
EPSS
VEX
Title
Azure IoT Explorer Information Disclosure Vulnerability
Summary
Improper restriction of communication channel to intended endpoints in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 14:46 UTC
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure IoT Explorer |
Affected:
1.0.0 , < 0.15.13
(custom)
cpe:2.3:a:microsoft:azure_iot_explorer:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-23665 (GCVE-0-2026-23665)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Linux Azure Diagnostic extension (LAD) Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in Azure Linux Virtual Machines 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 2026-03-05 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure Linux Virtual Machines with Azure Diagnostics extension |
Affected:
1.0.0 , < 2.1.24
(custom)
cpe:2.3:a:microsoft:azure_linux_virtual_machines_azure_diagnostics:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-26115 (GCVE-0-2026-26115)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:17
VLAI
EPSS
VEX
Title
SQL Server Elevation of Privilege Vulnerability
Summary
Improper validation of specified type of input in SQL Server allows an authorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 03:55 UTC
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 (GDR) |
Affected:
13.0.0 , < 13.0.6480.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack |
Affected:
13.0.0 , < 13.0.7075.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3520.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2100.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4460.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2160.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1170.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU 23) |
Affected:
16.0.0.0 , < 16.0.4240.4
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU 2) |
Affected:
17.0.0.0 , < 17.0.4020.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1105.2
(custom)
|
Date Public
2026-03-10 14:00
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CVE-2026-26117 (GCVE-0-2026-26117)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Arc Enabled Servers - Azure Connected Machine Agent Elevation of Privilege Vulnerability
Summary
Authentication bypass using an alternate path or channel in Azure Windows Virtual Machine Agent 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 2026-03-05 00:00 UTC
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Arc Enabled Servers - Azure Connected Machine Agent |
Affected:
1.0.0 , < 1.61
(custom)
cpe:2.3:a:microsoft:arc_enabled_servers_azure_connected_machine_agent:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-26118 (GCVE-0-2026-26118)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:18
VLAI
EPSS
VEX
Title
Azure MCP Server Tools Elevation of Privilege Vulnerability
Summary
Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-05 00:00 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure MCP Server Tools 1.0.0 (npm) |
Affected:
1.0.0 , < 1.0.2
(custom)
|
|
| Microsoft | Azure MCP Server Tools 1.0.0 (NuGet) |
Affected:
1.0.0 , < 1.0.2
(custom)
|
|
| Microsoft | Azure MCP Server Tools 2.0.0 (npm) |
Affected:
2.0.0-beta.1 , < 2.0.0-beta.17
(custom)
|
|
| Microsoft | Azure MCP Server Tools 2.0.0 (NuGet) |
Affected:
2.0.0-beta.1 , < 2.0.0-beta.17
(custom)
|
|
| Microsoft | Azure MCP Server Tools 2.0.0 (PyPi) |
Affected:
2.0.0-beta.1 , < 2.0.0-beta.17
(custom)
|
Date Public
2026-03-10 14:00
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CVE-2026-26121 (GCVE-0-2026-26121)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:17
VLAI
EPSS
VEX
Title
Azure IOT Explorer Spoofing Vulnerability
Summary
Server-side request forgery (ssrf) in Azure IoT Explorer allows an unauthorized attacker to perform spoofing over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 14:54 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure IoT Explorer |
Affected:
1.0.0 , < 0.15.14
(custom)
cpe:2.3:a:microsoft:azure_iot_explorer:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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CVE-2026-26148 (GCVE-0-2026-26148)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:05 – Updated: 2026-06-19 18:17
VLAI
EPSS
VEX
Title
Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability
Summary
External initialization of trusted variables or data stores in Azure Entra ID allows an unauthorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 18:00 UTC
CWE
- CWE-454 - External Initialization of Trusted Variables or Data Stores
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Azure AD SSH Login extension for Linux |
Affected:
1.0.0 , < 1.0.033370002
(custom)
cpe:2.3:a:microsoft:azure_ad_ssh_login_extension_for_linux:*:*:*:*:*:*:*:* |
Date Public
2026-03-10 14:00
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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