Home/CVE/Acceptance of extraneous untrusted data with trusted data in UrlMon allows an unauthorized attacker to bypass a security
CVE

CVE-2025-29842

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

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

HIGH · CVSS 7.5 EPSS 0.00199
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-345Insufficient Verification of Data Authenticity
CWE-349Acceptance of Extraneous Untrusted Data With Trusted Data
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Affected Products & Versions

13
microsoft windows 10 1507< 10.0.10240.21014
microsoft windows 10 1607< 10.0.14393.8066
microsoft windows 10 1809< 10.0.17763.7314
microsoft windows 10 21h2< 10.0.19044.5854
microsoft windows 10 22h2< 10.0.19045.5854
microsoft windows 11 22h2< 10.0.22621.5335
microsoft windows 11 23h2< 10.0.22631.5335
microsoft windows 11 24h2< 10.0.26100.4061
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Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 May 2025 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2025-29842Security Feature Bypass
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