# CVE-2026-67646

Heap-based buffer overflow in Microsoft SQL Server enabling remote code execution.

- Page: https://www.vulneraibility.com/cve/CVE-2026-67646
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.96% (percentile 62.1)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-122
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft SQL Server 2025 CU10: affected >= 17.0.4006.0 and < 17.0.5045.3
- Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR): affected >= 17.0.1050.2 and < 17.0.1155.3

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated attacker can trigger a heap overflow over the network to execute arbitrary code as the SQL Server service, enabling full server compromise.

## Action

Immediate action required

## Recommendation

Apply Microsoft security update immediately; restrict SQL access and monitor logs.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67646

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.