CVE-2025-29842

HIGH
Published May 13, 2025 Modified May 19, 2025 CWE-349 CWE-345

Description

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

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-349 CWE-349
CWE-345 CWE-345

Affected Products

Vendor Product
microsoft windows_10_1507
microsoft windows_10_1507
microsoft windows_10_1607
microsoft windows_10_1607
microsoft windows_10_1809
microsoft windows_10_1809
microsoft windows_10_21h2
microsoft windows_10_21h2
microsoft windows_10_21h2
microsoft windows_10_22h2
microsoft windows_10_22h2
microsoft windows_10_22h2
microsoft windows_11_22h2
microsoft windows_11_22h2
microsoft windows_11_23h2
microsoft windows_11_23h2
microsoft windows_11_24h2
microsoft windows_11_24h2
microsoft windows_server_2016
microsoft windows_server_2019
microsoft windows_server_2022
microsoft windows_server_2022_23h2
microsoft windows_server_2025

References

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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-29842? +
CVE-2025-29842 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-29842? +
CVE-2025-29842 affects products from microsoft, specifically: windows_10_1507, windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_22h2, windows_11_23h2, windows_11_24h2, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-29842? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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