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TI-2025-31663 Aliases CVE-2025-49693GHSA-57v4-gr9v-w9jf

Microsoft Brokering File System Elevation of Privilege Vulnerability

Priority LOW 36CWE-415Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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

Double free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0043 37th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 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 11 version 22H210.0.22621.0 to before 10.0.22621.562410.0.22621.5624Patch availableCNA
MicrosoftWindows 11 version 22H310.0.22631.0 to before 10.0.22631.562410.0.22631.5624Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.562410.0.22631.5624Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.465210.0.26100.4652Patch availableCNA
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.173210.0.25398.1732Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.465210.0.26100.4652Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.465210.0.26100.4652Patch availableCNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.5624 Fixed in 10.0.22621.5624 Patch available CNA
  • Windows 11 version 22H3 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.5624 Fixed in 10.0.22631.5624 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.5624 Fixed in 10.0.22631.5624 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4652 Fixed in 10.0.26100.4652 Patch available CNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.1732 Fixed in 10.0.25398.1732 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4652 Fixed in 10.0.26100.4652 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.4652 Fixed in 10.0.26100.4652 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*before 10.0.22621.5624VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*before 10.0.22631.5624VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*before 10.0.26100.4652VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.1732VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*before 10.0.26100.4652VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* Versions before 10.0.22621.5624 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* Versions before 10.0.22631.5624 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* Versions before 10.0.26100.4652 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.1732 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions before 10.0.26100.4652 Vulnerable ·Microsoft

Remediation

Microsoft 3 updates

  • KB5062570
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1732
  • KB5062553
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.4652
    • Windows 11 Version 24H2 for x64-based Systems 0.0.26200.4652, 10.0.26100.4652
    • Windows Server 2025 10.0.26100.4652
    • Windows Server 2025 (Server Core installation) 10.0.26100.4652
  • KB5062552
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.5624, 10.0.22631.5624
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.5624
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.5624
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.5624, 10.0.22621.5624

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-49693
  2. 2026-10-03 Alias added: GHSA-57v4-gr9v-w9jf

References

Patch 1

  • 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
  • TI-2024-19751 SmartScreen Prompt Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1651 →

Sources

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