CVE-2026-94520

Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94520

Configurations

No configuration.

History

13 Oct 2026, 21:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 21:19

Updated : 2026-10-15 20:39

NVD link : CVE-2026-94520

Mitre link : CVE-2026-94520

CVE.ORG link : CVE-2026-94520

JSON object : View

Products Affected

No product.

CWE

CWE-134

Use of Externally-Controlled Format String

{"id": "CVE-2026-94520", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-94520", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-13T21:55:13.545283Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.2}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (GDR)", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "14.0.2140.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 for x64-based Systems (CU31)", "versions": [{"status": "affected", "version": "14.0.3006.16", "lessThan": "14.0.3560.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (GDR)", "versions": [{"status": "affected", "version": "15.0.0", "lessThan": "15.0.2200.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 for x64-based Systems (CU32)", "versions": [{"status": "affected", "version": "15.0.4003.23", "lessThan": "15.0.4500.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (GDR)", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.0.1210.3", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 for x64-based Systems (CU27)", "versions": [{"status": "affected", "version": "16.0.4003.1", "lessThan": "16.0.4305.5", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (CU9)", "versions": [{"status": "affected", "version": "17.0.4006.2", "lessThan": "17.0.5015.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "versions": [{"status": "affected", "version": "17.0.1050.2", "lessThan": "17.0.1145.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}]}], "published": "2026-10-13T21:19:58.337", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94520", "source": "secure@microsoft.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-134"}]}], "descriptions": [{"lang": "en", "value": "Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network."}], "lastModified": "2026-10-15T20:39:54.150", "sourceIdentifier": "secure@microsoft.com"}