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CVE-2025-29842

UrlMon Security Feature Bypass Vulnerability

HIGH
7.5
CVSS Score
Published: May 13, 2025 at 04:59 PM UTC
Updated: June 17, 2026 at 09:05 AM UTC
14 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows 10 1809

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10 1507· Microsoft
95%
v < 10.0.10240.2101410.0.10240.0 ≤ v < 10.0.10240.2101410.0.10240.0
Affected range stops below 10.0.10240.21014, so it looks safe — our inference, not a vendor statement
Windows 10 1607· Microsoft
95%
v < 10.0.14393.806610.0.14393.0 ≤ v < 10.0.14393.806610.0.14393.0
Affected range stops below 10.0.14393.8066, so it looks safe — our inference, not a vendor statement
Windows 10 1809· Microsoft
95%
v < 10.0.17763.731410.0.17763.0 ≤ v < 10.0.17763.731410.0.17763.0
Affected range stops below 10.0.17763.7314, so it looks safe — our inference, not a vendor statement
Windows 10 21H2· Microsoft
95%
v < 10.0.19044.585410.0.19044.0 ≤ v < 10.0.19044.585410.0.19044.0
Affected range stops below 10.0.19044.5854, so it looks safe — our inference, not a vendor statement
Windows 10 22H2· Microsoft
95%
v < 10.0.19045.585410.0.19045.0 ≤ v < 10.0.19045.585410.0.19045.0
Affected range stops below 10.0.19045.5854, so it looks safe — our inference, not a vendor statement
Windows 11 22H2· Microsoft
95%
v < 10.0.22621.533510.0.22621.0 ≤ v < 10.0.22621.533510.0.22621.0
Affected range stops below 10.0.22621.5335, so it looks safe — our inference, not a vendor statement
Windows 11 23H2· Microsoft
95%
v < 10.0.22631.533510.0.22631.0 ≤ v < 10.0.22631.533510.0.22631.0
Affected range stops below 10.0.22631.5335, so it looks safe — our inference, not a vendor statement
Windows 11 24H2· Microsoft
95%
v < 10.0.26100.406110.0.26100.0 ≤ v < 10.0.26100.406110.0.26100.0
Affected range stops below 10.0.26100.4061, so it looks safe — our inference, not a vendor statement
Windows Server 2016· Microsoft
95%
v < 10.0.14393.806610.0.14393.0 ≤ v < 10.0.14393.806610.0.14393.0
Affected range stops below 10.0.14393.8066, so it looks safe — our inference, not a vendor statement
Windows Server 2019· Microsoft
95%
v < 10.0.17763.731410.0.17763.0 ≤ v < 10.0.17763.731410.0.17763.0
Affected range stops below 10.0.17763.7314, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29842

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-349CWE-345

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