PYSEC-2026-787

Vulnerability from pysec - Published: 2026-07-07 10:17 - Updated: 2026-07-07 10:17
VLAI
Details

A path traversal vulnerability was identified in ReFirm Labs binwalk from version 2.1.2b through 2.3.3 inclusive. By crafting a malicious PFS filesystem file, an attacker can get binwalk's PFS extractor to extract files at arbitrary locations when binwalk is run in extraction mode (-e option). Remote code execution can be achieved by building a PFS filesystem that, upon extraction, would extract a malicious binwalk module into the folder .config/binwalk/plugins. This vulnerability is associated with program files src/binwalk/plugins/unpfs.py. This issue affects binwalk from 2.1.2b through and including 2.3.3.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impacted products
Name purl
binwalk pkg:pypi/binwalk
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "binwalk",
        "purl": "pkg:pypi/binwalk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.2b"
            },
            {
              "fixed": "2.3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-4510",
    "GHSA-3cm8-v4mc-gppg"
  ],
  "details": "A path traversal vulnerability was identified in ReFirm Labs binwalk from version 2.1.2b through 2.3.3 inclusive. By crafting a malicious PFS filesystem file, an attacker can get binwalk\u0027s PFS extractor to extract files at arbitrary locations when binwalk is run in extraction mode (-e option). Remote code execution can be achieved by building a PFS filesystem that, upon extraction, would extract a malicious binwalk module into the folder .config/binwalk/plugins. This vulnerability is associated with program files src/binwalk/plugins/unpfs.py. This issue affects binwalk from 2.1.2b through and including 2.3.3.",
  "id": "PYSEC-2026-787",
  "modified": "2026-07-07T10:17:27.146365Z",
  "published": "2026-07-07T10:17:27.146365Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4510"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ReFirmLabs/binwalk/pull/617"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ReFirmLabs/binwalk"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/12/msg00022.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202309-07"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/binwalk"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3cm8-v4mc-gppg"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Path traversal in binwalk"
}



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