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 | 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
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},
{
"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
},
{
"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*",
"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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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.
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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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