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Description

Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

PUBLISHED Reserved 2025-07-09 | Published 2025-09-09 | Updated 2025-09-25 | Assigner microsoft




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Problem types

CWE-20: Improper Input Validation

Product status

10.0.26100.0 (custom) before 10.0.26100.6584
affected

10.0.26100.0 (custom) before 10.0.26100.6584
affected

10.0.26100.0 (custom) before 10.0.26100.6584
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53809 (Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability) vendor-advisory

cve.org (CVE-2025-53809)

nvd.nist.gov (CVE-2025-53809)

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