CVE-2026-40378

HIGH CVSS 7.5 View on NVD ↗

Description

Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40378

Published: Jul 14, 2026 17:16 UTC Modified: Jul 14, 2026 20:34 UTC