CVE-2026-94520
Full vulnerability record from the local CVENow database.
Description
Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.
Severity
MEDIUM
CVSS score
4.9
(v3.1)
Vulnerability status
Undergoing Analysis
Source identifier
Published
2026-10-13 21:19:58.337000
Last modified
2026-11-10 21:21:46.710000
View original CVE JSON
{
"id": "CVE-2026-94520",
"sourceIdentifier": "[email protected]",
"published": "2026-10-13T21:19:58.337",
"lastModified": "2026-11-10T21:21:46.710",
"vulnStatus": "Undergoing Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2017 (GDR)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "14.0.0",
"lessThan": "14.0.2150.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2017 for x64-based Systems (CU31)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "14.0.3006.16",
"lessThan": "14.0.3570.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2019 (GDR)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.0.0",
"lessThan": "15.0.2210.4",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2019 for x64-based Systems (CU32)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.0.4003.23",
"lessThan": "15.0.4510.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2022 (GDR)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "16.0.0",
"lessThan": "16.0.1220.3",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2022 for x64-based Systems (CU27)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "16.0.4003.1",
"lessThan": "16.0.4315.2",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2025 CU10",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "17.0.4006.0",
"lessThan": "17.0.5045.3",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2025 for x64-based Systems (CU9)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "17.0.4006.2",
"lessThan": "17.0.5015.4",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)",
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "17.0.1050.2",
"lessThan": "17.0.1155.3",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 4.9,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.2,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-13T21:55:13.545283Z",
"id": "CVE-2026-94520",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-134"
}
]
}
],
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94520",
"source": "[email protected]"
}
]
}