CVE-2025-50171

Name: CVE-2025-50171
Creator: NVD / NIST
Published: 2025-08-12T18:15:35.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2025-50171 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.. EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.91%

55.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Microsoft	Windows Server 2022	< 10.0.20348.3989
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1791
Microsoft	Windows Server 2025	< 10.0.26100.4851

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50171Vendor Advisory

Timeline

Published: Aug 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-50171?

Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.

How severe is CVE-2025-50171?

CVE-2025-50171 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2025-50171?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-50171?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST