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TI-2025-21249 Aliases CVE-2025-29842GHSA-cq8m-2x25-mgg8

UrlMon Security Feature Bypass Vulnerability

Priority LOW 35CWE-349Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00442 38th percentileScored 2026-11-07
Fix Fixed Microsoft: 10 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows 10 Version 150710.0.10240.0 to before 10.0.10240.2101410.0.10240.21014Patch availableCNA
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.806610.0.14393.8066Patch availableCNA
MicrosoftWindows 10 Version 180910.0.17763.0 to before 10.0.17763.731410.0.17763.7314Patch availableCNA
MicrosoftWindows 10 Version 21H210.0.19044.0 to before 10.0.19044.585410.0.19044.5854Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.585410.0.19045.5854Patch availableCNA
MicrosoftWindows 11 version 22H210.0.22621.0 to before 10.0.22621.533510.0.22621.5335Patch availableCNA
MicrosoftWindows 11 version 22H310.0.22631.0 to before 10.0.22631.533510.0.22631.5335Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.533510.0.22631.5335Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.406110.0.26100.4061Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.806610.0.14393.8066Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.806610.0.14393.8066Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.731410.0.17763.7314Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.731410.0.17763.7314Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.369210.0.20348.3692Patch availableCNA
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.161110.0.25398.1611Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.406110.0.26100.4061Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.406110.0.26100.4061Patch availableCNA
  • Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.21014 Fixed in 10.0.10240.21014 Patch available CNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8066 Fixed in 10.0.14393.8066 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.7314 Fixed in 10.0.17763.7314 Patch available CNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19044.0 to before 10.0.19044.5854 Fixed in 10.0.19044.5854 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.5854 Fixed in 10.0.19045.5854 Patch available CNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.5335 Fixed in 10.0.22621.5335 Patch available CNA
  • Windows 11 version 22H3 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.5335 Fixed in 10.0.22631.5335 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.5335 Fixed in 10.0.22631.5335 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4061 Fixed in 10.0.26100.4061 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8066 Fixed in 10.0.14393.8066 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8066 Fixed in 10.0.14393.8066 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.7314 Fixed in 10.0.17763.7314 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.7314 Fixed in 10.0.17763.7314 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.3692 Fixed in 10.0.20348.3692 Patch available CNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.1611 Fixed in 10.0.25398.1611 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4061 Fixed in 10.0.26100.4061 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4061 Fixed in 10.0.26100.4061 Patch available CNA

CPE configurations NVD · 23

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*before 10.0.10240.21014VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*before 10.0.10240.21014VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*before 10.0.14393.8066VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*before 10.0.14393.8066VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*before 10.0.17763.7314VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*before 10.0.17763.7314VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*before 10.0.19044.5854VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*before 10.0.19044.5854VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*before 10.0.19044.5854VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*before 10.0.19045.5854VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* Versions before 10.0.10240.21014 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* Versions before 10.0.10240.21014 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* Versions before 10.0.14393.8066 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* Versions before 10.0.14393.8066 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* Versions before 10.0.17763.7314 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* Versions before 10.0.17763.7314 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19044.5854 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* Versions before 10.0.19044.5854 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* Versions before 10.0.19044.5854 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19045.5854 Vulnerable ·Microsoft
Show 13 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*before 10.0.19045.5854VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*before 10.0.19045.5854VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:arm64:*before 10.0.22621.5335VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:*before 10.0.22621.5335VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*before 10.0.22631.5335VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*before 10.0.22631.5335VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*before 10.0.26100.4061VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*before 10.0.26100.4061VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.8066VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.7314VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.3692VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.1611VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*before 10.0.26100.4061VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* Versions before 10.0.19045.5854 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* Versions before 10.0.19045.5854 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:arm64:* Versions before 10.0.22621.5335 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:* Versions before 10.0.22621.5335 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* Versions before 10.0.22631.5335 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* Versions before 10.0.22631.5335 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* Versions before 10.0.26100.4061 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* Versions before 10.0.26100.4061 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.8066 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.7314 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.3692 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.1611 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions before 10.0.26100.4061 Vulnerable ·Microsoft

Remediation

Microsoft 10 updates

  • KB5058500
    SecurityHotpatchUpdate
    • Windows Server 2022 10.0.20348.3630
    • Windows Server 2022 (Server Core installation) 10.0.20348.3630
  • KB5058497
    SecurityHotpatchUpdate
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.3981
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.3981
    • Windows Server 2025 10.0.26100.3981
    • Windows Server 2025 (Server Core installation) 10.0.26100.3981
  • KB5058411
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.4061
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.4061
    • Windows Server 2025 10.0.26100.4061
    • Windows Server 2025 (Server Core installation) 10.0.26100.4061
Show 7 more Microsoft updates
  • KB5058405
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.5335
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.5335
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.5335, 10.0.22621.5335
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.5335, 10.0.22621.5335
  • KB5058392
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.7314
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.7314
    • Windows Server 2019 10.0.17763.7314
    • Windows Server 2019 (Server Core installation) 10.0.17763.7314
  • KB5058387
    Security Update
    • Windows 10 for 32-bit Systems 10.0.10240.21014
    • Windows 10 for x64-based Systems 10.0.10240.21014
  • KB5058385
    Security Update
    • Windows Server 2022 10.0.20348.3692
    • Windows Server 2022 (Server Core installation) 10.0.20348.3692
  • KB5058384
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1611
  • KB5058383
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8066
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.8066
    • Windows Server 2016 10.0.14393.8066
    • Windows Server 2016 (Server Core installation) 10.0.14393.8066
  • KB5058379
    Security Update
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.5854
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.5854
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.5854
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.5854
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.5854
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.5854

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Security Feature Bypass
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-29842
  2. 2026-10-03 Alias added: GHSA-cq8m-2x25-mgg8

References

Patch 1

  • TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-32708 Windows Task Scheduler Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-29106 Windows MSHTML Platform Spoofing Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19802 Windows MSHTML Platform Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1229 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences