CVE-2026-21262 (GCVE-0-2026-21262)
Vulnerability from cvelistv5 – Published: 2026-03-10 17:04 – Updated: 2026-06-19 18:17Title
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 | CPE status | |
|---|---|---|---|---|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 (GDR) |
Affected:
13.0.0 , < 13.0.6480.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack |
Affected:
13.0.0 , < 13.0.7075.5
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2017 (CU 31) |
Affected:
14.0.0 , < 14.0.3520.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2017 (GDR) |
Affected:
14.0.0 , < 14.0.2100.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4460.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2160.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1170.5
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU 23) |
Affected:
16.0.0.0 , < 16.0.4240.4
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2025 (CU 2) |
Affected:
17.0.0.0 , < 17.0.4020.2
(custom)
|
guessed | |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1105.2
(custom)
|
guessed |
Date Public
2026-03-10 14:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 618191f0-51bf-42db-961a-95dc4d320f6e
Exploited: Yes
Timestamps
First Seen: 2026-04-19
Asserted: 2026-04-19
Scope
Notes: KEVIntel entry: SQL Server Elevation of Privilege Vulnerability | Affected: Microsoft / Microsoft SQL Server 2016 Service Pack 3 (GDR), Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack, Microsoft SQL Server 2017 (CU 31), Microsoft SQL Server 2017 (GDR), Microsoft SQL Server 2019 (CU 32), Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 23), Microsoft SQL Server 2025 (CU 2), Microsoft SQL Server 2025 for x64-based Systems (GDR) | CVSS: 8.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | SQL Server Elevation of Privilege Vulnerability |
| Vendor | Microsoft |
| Product | Microsoft SQL Server 2016 Service Pack 3 (GDR), Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack, Microsoft SQL Server 2017 (CU 31), Microsoft SQL Server 2017 (GDR), Microsoft SQL Server 2019 (CU 32), Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 23), Microsoft SQL Server 2025 (CU 2), Microsoft SQL Server 2025 for x64-based Systems (GDR) |
| Added Date | 2026-04-19T13:46:00.775Z |
| Cvss Score | 8.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-19 12:42 UTC
| Updated: 2026-06-19 12:42 UTC
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"version": "13.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "13.0.7075.5",
"status": "affected",
"version": "13.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2017 (CU 31)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "14.0.3520.4",
"status": "affected",
"version": "14.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2017 (GDR)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "14.0.2100.4",
"status": "affected",
"version": "14.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2019 (CU 32)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "15.0.4460.4",
"status": "affected",
"version": "15.0.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2019 (GDR)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "15.0.2160.4",
"status": "affected",
"version": "15.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2022 (GDR)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.1170.5",
"status": "affected",
"version": "16.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2022 for x64-based Systems (CU 23)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "16.0.4240.4",
"status": "affected",
"version": "16.0.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2025 (CU 2)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "17.0.4020.2",
"status": "affected",
"version": "17.0.0.0",
"versionType": "custom"
}
]
},
{
"platforms": [
"x64-based Systems"
],
"product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "17.0.1105.2",
"status": "affected",
"version": "17.0.1050.2",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*",
"versionEndExcluding": "14.0.2100.4",
"versionStartIncluding": "14.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "15.0.2160.4",
"versionStartIncluding": "15.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2016:*:sp3:*:*:*:*:x64:*",
"versionEndExcluding": "13.0.6480.4",
"versionStartIncluding": "13.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*",
"versionEndExcluding": "14.0.3520.4",
"versionStartIncluding": "14.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2016:*:sp3:*:*:*:*:x64:*",
"versionEndExcluding": "13.0.7075.5",
"versionStartIncluding": "13.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "16.0.1170.5",
"versionStartIncluding": "16.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "17.0.1105.2",
"versionStartIncluding": "17.0.1050.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "15.0.4460.4",
"versionStartIncluding": "15.0.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*",
"versionEndExcluding": "16.0.4240.4",
"versionStartIncluding": "16.0.0.0",
"vulnerable": true
},
{
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"versionEndExcluding": "17.0.4020.2",
"versionStartIncluding": "17.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-03-10T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/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-284",
"description": "CWE-284: Improper Access Control",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T18:17:19.420Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "SQL Server Elevation of Privilege Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262"
}
],
"title": "SQL Server Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-21262",
"datePublished": "2026-03-10T17:04:32.361Z",
"dateReserved": "2025-12-11T21:02:05.737Z",
"dateUpdated": "2026-06-19T18:17:19.420Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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.