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TI-2025-15285 Aliases CVE-2025-21317GHSA-mfpq-3jm4-gh33

Windows Kernel Memory Information Disclosure Vulnerability

Priority LOW 27CWE-532Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

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

Summary

Windows Kernel Memory Information Disclosure Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.009 59th percentileScored 2026-11-07
Fix Fixed Microsoft: 5 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 21H210.0.19044.0 to before 10.0.19044.537110.0.19044.5371Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.537110.0.19045.5371Patch availableCNA
MicrosoftWindows 11 version 22H210.0.22621.0 to before 10.0.22621.475110.0.22621.4751Patch availableCNA
MicrosoftWindows 11 version 22H310.0.22631.0 to before 10.0.22631.475110.0.22631.4751Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.475110.0.22631.4751Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.289410.0.26100.2894Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.309110.0.20348.3091Patch availableCNA
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.136910.0.25398.1369Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.289410.0.26100.2894Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.289410.0.26100.2894Patch availableCNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19044.0 to before 10.0.19044.5371 Fixed in 10.0.19044.5371 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.5371 Fixed in 10.0.19045.5371 Patch available CNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.4751 Fixed in 10.0.22621.4751 Patch available CNA
  • Windows 11 version 22H3 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.4751 Fixed in 10.0.22631.4751 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.4751 Fixed in 10.0.22631.4751 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.2894 Fixed in 10.0.26100.2894 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.3091 Fixed in 10.0.20348.3091 Patch available CNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.1369 Fixed in 10.0.25398.1369 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.2894 Fixed in 10.0.26100.2894 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.2894 Fixed in 10.0.26100.2894 Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*before 10.0.19044.5371VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*before 10.0.19045.5371VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*before 10.0.22621.4751VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*before 10.0.22631.4751VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*before 10.0.26100.2894VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.3091VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.1369VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*before 10.0.26100.2894VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* Versions before 10.0.19044.5371 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* Versions before 10.0.19045.5371 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* Versions before 10.0.22621.4751 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* Versions before 10.0.22631.4751 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* Versions before 10.0.26100.2894 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.3091 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.1369 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions before 10.0.26100.2894 Vulnerable ·Microsoft

Remediation

Microsoft 5 updates

  • KB5050021
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.4751
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.4751
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.4751
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.4751
  • KB5050009
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.2894
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.2894
    • Windows Server 2025 10.0.26100.2894
    • Windows Server 2025 (Server Core installation) 10.0.26100.2894
  • KB5049984
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1369
Show 2 more Microsoft updates
  • KB5049983
    Security Update
    • Windows Server 2022 10.0.20348.3091
    • Windows Server 2022 (Server Core installation) 10.0.20348.3091
  • KB5049981
    Security Update
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.5371
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.5371
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.5371
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.5371
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.5371
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.5371

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Information Disclosure
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21317
  2. 2026-10-03 Alias added: GHSA-mfpq-3jm4-gh33

References

Patch 1

  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-73128 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • 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
See all 3967 →

Sources

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