Unrated severityNVD Advisory· Published Jul 14, 2026· Updated Aug 3, 2026
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
CVE-2026-40378
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.
Affected products
1Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40378mitrevendor-advisorypatch
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