May 2026: Windows Projected File System Elevation of Privilege Vulnerability
CVE-2026-34340 Published on May 12, 2026
Windows Projected File System Elevation of Privilege Vulnerability
Use after free in Windows Projected File System allows an authorized attacker to elevate privileges locally.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-34340 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-34340
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Affected Versions
Microsoft Windows 10 Version 1809:- Version 10.0.17763.0 and below 10.0.17763.8755 is affected.
- Version 10.0.19044.0 and below 10.0.19044.7291 is affected.
- Version 10.0.19045.0 and below 10.0.19045.7291 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7079 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7079 is affected.
- Version 10.0.26100.0 and below 10.0.26100.8457 is affected.
- Version 10.0.26200.0 and below 10.0.26200.8457 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2113 is affected.
- Version 10.0.17763.0 and below 10.0.17763.8755 is affected.
- Version 10.0.17763.0 and below 10.0.17763.8755 is affected.
- Version 10.0.20348.0 and below 10.0.20348.5139 is affected.
- Version 10.0.25398.0 and below 10.0.25398.2330 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32860 is affected.
- Version 10.0.26100.0 and below 10.0.26100.32860 is affected.