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CVE-2026-94512 Microsoft CVE debrief

A heap-based buffer overflow vulnerability in Microsoft SQL Server could allow an authorized attacker to execute code remotely. Multiple versions of SQL Server are affected, including SQL Server 2017, 2019, 2022, and 2025. Microsoft has released patches for these vulnerabilities. The vulnerability requires immediate attention from SQL Server administrators and IT teams to prevent remote code execution by authorized attackers. Patching affected versions is crucial to prevent exploitation. The CVE Program and NVD provide official records of the vulnerability.

Vendor
Microsoft
Product
Microsoft SQL Server 2017 (GDR)
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

SQL Server administrators, database administrators, and IT teams responsible for patching and securing SQL Server instances. These teams should prioritize patching affected versions to prevent exploitation. The vulnerability requires immediate attention to prevent remote code execution by authorized attackers.

Why it matters

This vulnerability requires immediate attention from SQL Server administrators and IT teams to prevent remote code execution by authorized attackers. Patching affected versions is crucial to prevent exploitation.

  • Remote code execution requires immediate patching priority
  • Authorized attackers can exploit this vulnerability
  • Multiple SQL Server versions are affected
  • Patching is required to prevent exploitation

Technical summary

A heap-based buffer overflow vulnerability exists in Microsoft SQL Server, allowing an authorized attacker to execute code remotely. The vulnerability affects multiple versions of SQL Server, including SQL Server 2017, 2019, 2022, and 2025. Microsoft has released patches for these vulnerabilities.

Defensive priority

Apply patches immediately for SQL Server instances, especially those exposed to the internet or used by multiple users.

Recommended defensive actions

  • Apply patches for affected SQL Server versions
  • Restrict network access to SQL Server instances
  • Monitor for suspicious activity on SQL Server instances

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the vulnerability. The vulnerability affects multiple versions of SQL Server, including SQL Server 2017, 2019, 2022, and 2025. The official CVE Program record and NVD detail page provide additional information on the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-94512 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-94512

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-94512 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-94512

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • SQL Server Remote Code Execution Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/94xxx/CVE-2026-94512.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94512

    Supplemental source - vendor-advisory, patch

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.