Strix
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CVE-2025-29842

HIGHCVSS 7.5/10EPSS 0.37%

Last modified

CVE-2025-29842 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Acceptance of extraneous untrusted data with trusted data in UrlMon allows an unauthorized attacker to bypass a security feature over a network.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

Acceptance of extraneous untrusted data with trusted data in UrlMon allows an unauthorized attacker to bypass a security feature over a network.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.37%

28.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MicrosoftWindows 10 1507< 10.0.10240.21014
MicrosoftWindows 10 1607< 10.0.14393.8066
MicrosoftWindows 10 1809< 10.0.17763.7314
MicrosoftWindows 10 21h2< 10.0.19044.5854
MicrosoftWindows 10 22h2< 10.0.19045.5854
MicrosoftWindows 11 22h2< 10.0.22621.5335
MicrosoftWindows 11 23h2< 10.0.22631.5335
MicrosoftWindows 11 24h2< 10.0.26100.4061
MicrosoftWindows Server 2016< 10.0.14393.8066
MicrosoftWindows Server 2019< 10.0.17763.7314
MicrosoftWindows Server 2022< 10.0.20348.3692
MicrosoftWindows Server 2022 23h2< 10.0.25398.1611
MicrosoftWindows Server 2025< 10.0.26100.4061

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-29842?
Acceptance of extraneous untrusted data with trusted data in UrlMon allows an unauthorized attacker to bypass a security feature over a network.
How severe is CVE-2025-29842?
CVE-2025-29842 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2025-29842?
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-2025-29842?

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

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Source: NVD / NIST