CVE-2026-23988

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Source
https://cve.org/CVERecord?id=CVE-2026-23988
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23988.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23988
Aliases
  • GHSA-hcx5-hrhj-xhq9
Published
2026-01-22T21:52:26Z
Modified
2026-10-21T02:56:25Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Rufus has Local Privilege Escalation via TOCTOU Race Condition in Fido Script Handling
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-367"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23988.json"
}
References

Affected packages

Git / github.com/pbatard/rufus

Affected ranges

Type
GIT
Repo
https://github.com/pbatard/rufus
Events
Introduced
fb9dd17fe609472e201fc21d66fb8cddd6a5c10a
Fixed
460cc5768aa45be07941b9e4ebc9bee02d282873
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "< 4.12_BETA"
                },
                {
                    "last_affected":  "< 4.12_BETA"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "460cc5768aa45be07941b9e4ebc9bee02d282873"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

< 4.*
< 4.12_BETA

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23988.json"