7.3

CVE-2026-23988

Exploit

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 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Akeo ≫ Rufus Version < 4.12
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.085
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 7.3 1.3 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

https://github.com/pbatard/rufus/security/advisories/GHSA-hcx5-hrhj-xhq9
Vendor Advisory
Exploit
https://github.com/pbatard/rufus/commit/460cc5768aa45be07941b9e4ebc9bee02d282873
Patch
https://github.com/pbatard/rufus/releases/tag/v4.12_BETA
Broken Link