{"cve":"CVE-2021-4287","nvd":{"published":"2022-12-27T11:15:10.640","modified":"2026-06-17T04:19:25.707","status":"Modified","description":"A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-59","CWE-61"],"references":["https://github.com/ReFirmLabs/binwalk/commit/fa0c0bd59b8588814756942fe4cb5452e76c1dcd","https://github.com/ReFirmLabs/binwalk/pull/556","https://github.com/ReFirmLabs/binwalk/releases/tag/v2.3.3","https://vuldb.com/?ctiid.216876","https://vuldb.com/?id.216876"],"products":["microsoft:binwalk"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2021-4287","score":0.02145,"percentile":0.82086,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8m3f-g62j-3vx8","url":"https://osv.dev/vulnerability/GHSA-8m3f-g62j-3vx8","summary":"binwalk vulnerable to UNIX Symbolic Link (Symlink) Following","modified":"2026-07-07T11:56:32.774933377Z","packages":[{"ecosystem":"PyPI","name":"binwalk","purl":"pkg:pypi/binwalk","ranges":["<2.3.3"],"fixed":["2.3.3"]}]},{"id":"PYSEC-2026-788","url":"https://osv.dev/vulnerability/PYSEC-2026-788","summary":"binwalk vulnerable to UNIX Symbolic Link (Symlink) Following","modified":"2026-07-07T11:45:43.150170587Z","packages":[{"ecosystem":"PyPI","name":"binwalk","purl":"pkg:pypi/binwalk","ranges":["<2.3.3"],"fixed":["2.3.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}