Is CVE-2025-29842 in the CISA KEV catalog?

No. CVE-2025-29842 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-29842?

CVE-2025-29842 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2025-29842?

CVE-2025-29842 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-29842?

Install KB5058387 for Windows 10. Fixes are available for 17 affected products.

CVE & CISA-KEV Catalog

CVE-2025-29842

HIGH

7.5

CVSS v3

NVD

Description

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

CWE-349 CWE-345

How to fix

Remediation Available

Windows 10Windows

Install:KB5058387Microsoft

Windows 10 Version 1607Windows

Install:KB5058383Microsoft

Windows 10 Version 1809Windows

Install:KB5058392Microsoft

Windows 10 Version 21H2Windows

Install:KB5058379Microsoft

Windows 10 Version 22H2Windows

Install:KB5058379Microsoft

Windows 11 Version 22H2Windows

Install:KB5058405Microsoft

Windows 11 Version 23H2Windows

Install:KB5058405Microsoft

Windows 11 Version 24H2Windows

Install:KB5058411Microsoft

Install:KB5058497Microsoft

Windows Server 2016Windows

Install:KB5058383Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5058383Microsoft

Windows Server 2019Windows

Install:KB5058392Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5058392Microsoft

Windows Server 2022Windows

Install:KB5058385Microsoft

Install:KB5058500Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5058385Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5058384Microsoft

Windows Server 2025Windows

Install:KB5058497Microsoft

Install:KB5058411Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5058497Microsoft

Install:KB5058411Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

Related Vulnerabilities

Other CWE-349 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-9535	Critical	9.8	2.5%	-	-
CVE-2026-32162	High	8.4	2.0%	-	Fix
CVE-2018-1131	High	8.8	1.3%	-	-
CVE-2021-21374	High	8.1	1.0%	-	Fix
CVE-2024-21094	Low	3.7	0.7%	-	Fix
CVE-2025-48804	Medium	6.8	0.5%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-19.