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 script to the %TEMP% directory (writeable by standard users) without locking the file, a local attacker can replace the legitimate script with a malicious one between the file write operation and the execution step. This allows arbitrary code execution with Administrator privileges. This issue has been fixed in version 4.12_BETA.
CVSS Score
7.3
EPSS Score
0.0
Published
2026-01-22
Akeo Consulting Rufus 3.0 and earlier is affected by: DLL search order hijacking. The impact is: Arbitrary code execution WITH escalation of privilege. The component is: Executable installers, portable executables (ALL executables on the web site). The attack vector is: CAPEC-471, CWE-426, CWE-427.
CVSS Score
7.8
EPSS Score
0.004
Published
2019-07-19
Akeo Consulting Rufus 3.0 and earlier is affected by: Insecure Permissions. The impact is: arbitrary code execution with escalation of privilege. The component is: Executable installer, portable executable (ALL executables available). The attack vector is: CWE-29, CWE-377, CWE-379.
CVSS Score
9.8
EPSS Score
0.007
Published
2019-07-19