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Description

Improper authentication in Windows Remote Desktop Protocol allows an authorized attacker to bypass a security feature locally.

PUBLISHED Reserved 2025-08-12 | Published 2025-10-14 | Updated 2025-11-22 | Assigner microsoft




HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-287: Improper Authentication

Product status

10.0.26200.0 (custom) before 10.0.26200.6899
affected

10.0.20348.0 (custom) before 10.0.20348.4294
affected

10.0.19044.0 (custom) before 10.0.19044.6456
affected

10.0.22621.0 (custom) before 10.0.22621.6060
affected

10.0.19045.0 (custom) before 10.0.19045.6456
affected

10.0.26100.0 (custom) before 10.0.26100.6899
affected

10.0.22631.0 (custom) before 10.0.22631.6060
affected

10.0.22631.0 (custom) before 10.0.22631.6060
affected

10.0.25398.0 (custom) before 10.0.25398.1913
affected

10.0.26100.0 (custom) before 10.0.26100.6899
affected

10.0.26100.0 (custom) before 10.0.26100.6899
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55340 (Windows Remote Desktop Protocol Security Feature Bypass) vendor-advisory

cve.org (CVE-2025-55340)

nvd.nist.gov (CVE-2025-55340)

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