CVE-2026-23988 Rufus has Local Privilege Escalation via TOCTOU Race Condition in Fido Script Handling

Rufus is a utility that helps format and create bootable USB flash drives. Versions 4.11 and below contain a race condition TOCTOU in src/net.c during the creation, validation, and execution of the Fido PowerShell script. Since Rufus runs with elevated privileges Administrator but writes the scri...

CVE-2026-23988

CVE-2026-23988 affects Rufus 4.11 and earlier. A TOCTOU race in the Fido PowerShell script handling (in src/net.c) occurs while the script is created, validated, and executed. Rufus runs with Administrator privileges but writes the script to %TEMP% (writable by standard users) without proper lock...