Aug 2026: Windows Projected File System Elevation of Privilege Vulnerability
CVE-2026-62751 Published on August 11, 2026
Windows Projected File System Elevation of Privilege Vulnerability
Integer overflow or wraparound in Windows Projected File System allows an authorized attacker to elevate privileges locally.
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2026-62751
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Affected Versions
Microsoft Windows 10 Version 21H2:- Version 10.0.19044.0 and below 10.0.19044.7663 is affected.
- Version 10.0.19045.0 and below 10.0.19045.7663 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7517 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7517 is affected.
- Version 10.0.26100.0 and below 10.0.26100.9168 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9168 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2704 is affected.
- Version 10.0.20348.0 and below 10.0.20348.5499 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33296 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33296 is affected.