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Windows Local Security Authority Subsystem Service (LSASS) Denial of Service vulnerabilities
1 published alerts for Microsoft Windows Local Security Authority Subsystem Service (LSASS) Denial of Service.
Microsoft MSRC
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service vulnerability
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service vulnerability (CVE-2026-40378) was added to Microsoft’s security update guidance. Memory allocation with excessive size value in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.