CVE-2026-40378
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
1.2%
66.1th percentile
CISA KEV
Not listed
Weakness / dates
CWE-789
Published 2026-07-14 · modified 2026-07-22
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.