Integer overflow in Microsoft SQL Server 2022 (Cu 26)

CVE-2026-67641

Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-67641?
CVE-2026-67641 is a medium-severity vulnerability in Microsoft SQL Server 2022 (Cu 26), classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-67641?
Medium severity. CVSS v3 base score is 6.5 out of 10.