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HIGH · 7.0

CVE-2025-55340

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

Vulnerability Description

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

CVSS Score

7.0

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows 10 21H2< 10.0.19044.6456
MicrosoftWindows 10 22H2< 10.0.19045.6456
MicrosoftWindows 11 22H2< 10.0.22621.6060
MicrosoftWindows 11 23H2< 10.0.22631.6060
MicrosoftWindows 11 24H2< 10.0.26100.6899
MicrosoftWindows 11 25H2< 10.0.26200.6899
MicrosoftWindows Server 2022< 10.0.20348.4294
MicrosoftWindows Server 2022 23H2< 10.0.25398.1913
MicrosoftWindows Server 2025< 10.0.26100.6899

Related Weaknesses (CWE)

CWE-287

References

FAQ

What is CVE-2025-55340?

CVE-2025-55340 is a vulnerability with a CVSS score of 7.0 (HIGH). Improper authentication in Windows Remote Desktop Protocol allows an authorized attacker to bypass a security feature locally.

How severe is CVE-2025-55340?

CVE-2025-55340 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-55340?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.