Microsoft SQL Server 2022 (CU 26) vulnerability

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Published 8 Sep 2026Updated 15 Sep 20261 sources
CVSS 8.8

What happened

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Affected versions

Microsoft SQL Server 2022 (CU 26): 16.0.0.0 through before 16.0.4275.2 (custom); 16.0.0 through before 16.0.1200.5 (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.