CVE-2026-78456 PUBLISHED

SQL Server Remote Code Execution Vulnerability

Assigner: microsoft
Reserved: 24.08.2026 Published: 08.09.2026 Updated: 09.09.2026

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

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Score: 8.8

Product Status

Vendor Microsoft
Product Microsoft SQL Server 2022 (CU 26)
Versions
  • affected from 16.0.0.0 to 16.0.4275.2 (excl.)
Vendor Microsoft
Product Microsoft SQL Server 2022 (GDR)
Versions
  • affected from 16.0.0 to 16.0.1200.5 (excl.)

References

Problem Types