FKIE_CVE-2026-23988

Vulnerability from fkie_nvd - Published: 2026-01-22 22:16 - Updated: 2026-02-27 14:36
Severity ?
7.3 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
security-advisories@github.comhttps://github.com/pbatard/rufus/commit/460cc5768aa45be07941b9e4ebc9bee02d282873Patch
security-advisories@github.comhttps://github.com/pbatard/rufus/releases/tag/v4.12_BETABroken Link
security-advisories@github.comhttps://github.com/pbatard/rufus/security/advisories/GHSA-hcx5-hrhj-xhq9Exploit, Vendor Advisory
Impacted products
Vendor Product Version
akeo rufus *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-23988",
  "lastModified": "2026-02-27T14:36:16.870",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.3,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
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  "published": "2026-01-22T22:16:21.193",
  "references": [
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      "tags": [
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      "url": "https://github.com/pbatard/rufus/commit/460cc5768aa45be07941b9e4ebc9bee02d282873"
    },
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      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/pbatard/rufus/releases/tag/v4.12_BETA"
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      "source": "security-advisories@github.com",
      "tags": [
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-367"
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      "source": "security-advisories@github.com",
      "type": "Primary"
    }
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}


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