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4 vulnerabilities by pbatard
CVE-2026-23988 (GCVE-0-2026-23988)
Vulnerability from nvd – Published: 2026-01-22 21:52 – Updated: 2026-01-23 20:13
VLAI
Title
Rufus has Local Privilege Escalation via TOCTOU Race Condition in Fido Script Handling
Summary
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.
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pbatard/rufus/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pbatard/rufus/commit/460cc5768… | x_refsource_MISC |
| https://github.com/pbatard/rufus/releases/tag/v4.… | x_refsource_MISC |
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CVE-2025-26624 (GCVE-0-2025-26624)
Vulnerability from nvd – Published: 2025-02-18 22:40 – Updated: 2025-02-19 15:02
VLAI
Title
Local Privilege Escalation in Rufus 4.6 and previous versions
Summary
Rufus is a utility that helps format and create bootable USB flash drives. A DLL hijacking vulnerability in Rufus 4.6.2208 and earlier versions allows an attacker loading and executing a malicious DLL with escalated privileges (since the executable has been granted higher privileges during the time of launch) due to the ability to inject a malicious `cfgmgr32.dll` in the same directory as the executable and have it side load automatically. This is fixed in commit `74dfa49`, which will be part of version 4.7. Users are advised to upgrade as soon as version 4.7 becomes available. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pbatard/rufus/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pbatard/rufus/commit/74dfa4970… | x_refsource_MISC |
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CVE-2026-23988 (GCVE-0-2026-23988)
Vulnerability from cvelistv5 – Published: 2026-01-22 21:52 – Updated: 2026-01-23 20:13
VLAI
Title
Rufus has Local Privilege Escalation via TOCTOU Race Condition in Fido Script Handling
Summary
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.
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pbatard/rufus/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pbatard/rufus/commit/460cc5768… | x_refsource_MISC |
| https://github.com/pbatard/rufus/releases/tag/v4.… | x_refsource_MISC |
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CVE-2025-26624 (GCVE-0-2025-26624)
Vulnerability from cvelistv5 – Published: 2025-02-18 22:40 – Updated: 2025-02-19 15:02
VLAI
Title
Local Privilege Escalation in Rufus 4.6 and previous versions
Summary
Rufus is a utility that helps format and create bootable USB flash drives. A DLL hijacking vulnerability in Rufus 4.6.2208 and earlier versions allows an attacker loading and executing a malicious DLL with escalated privileges (since the executable has been granted higher privileges during the time of launch) due to the ability to inject a malicious `cfgmgr32.dll` in the same directory as the executable and have it side load automatically. This is fixed in commit `74dfa49`, which will be part of version 4.7. Users are advised to upgrade as soon as version 4.7 becomes available. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pbatard/rufus/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pbatard/rufus/commit/74dfa4970… | x_refsource_MISC |
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