Out-of-Bounds Read Vulnerability in Windows Extensible File Allocation by Microsoft
CVE-2026-25174

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
10 March 2026

What is CVE-2026-25174?

The out-of-bounds read vulnerability found in the Windows Extensible File Allocation can be exploited by an authorized attacker to achieve local privilege escalation. This allows unauthorized access to sensitive information within the affected system, potentially compromising security and data integrity. Users are encouraged to apply relevant patches and updates to mitigate the risks associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8957

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8511

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7058

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.