Summary
Impact: Tampering. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
The attacker must inject themselves into the logical network path between the target and the resource requested by the victim to read or modify network communications. This is called a machine-in-the-middle (MITM) attack.
According to the CVSS metric, user interaction is required (UI:R) and privileges required are none (PR:N). What does that mean for this vulnerability?
An unauthorized attacker must wait for a user to initiate a connection.
Security updates
10.0.17763.6893 — https://support.microsoft.com/help/5052000
10.0.20348.3207 — https://support.microsoft.com/help/5051979
10.0.20348.3148 — https://support.microsoft.com/help/5052106
10.0.19044.5487 — https://support.microsoft.com/help/5051974
10.0.22621.4890 — https://support.microsoft.com/help/5051989
10.0.26100.3194 — https://support.microsoft.com/help/5051987
10.0.26100.3107 — https://support.microsoft.com/help/5052105
10.0.25398.1425 — https://support.microsoft.com/help/5051980
10.0.10240.20915 — https://support.microsoft.com/help/5052040
10.0.14393.7785 — https://support.microsoft.com/help/5052006
Vulnerabilities 1
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Medium 6.8
Windows Remote Desktop Configuration Service Tampering Vulnerability
Windows Remote Desktop Configuration Service Tampering Vulnerability
Revision history
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#1
Information published.
References
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CVE-2025-21349 Windows Remote Desktop Configuration Service Tampering Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21349
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss