{"id":"CVE-2021-4043","title":"NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.","summary":"NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"gpac","product":"gpac","affected":["gpac < 1.1.0","debian_linux = 11.0"],"patched":["gpac 1.1.0"],"published":"2022-02-04","updated":"2026-11-03","sourceUpdated":"2026-11-03T22:17:08.373","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-4043","references":[{"url":"https://github.com/gpac/gpac/commit/64a2e1b799352ac7d7aad1989bc06e7b0f2b01db","label":"security@huntr.dev"},{"url":"https://huntr.dev/bounties/d7a534cb-df7a-48ba-8ce3-46b1551a9c47","label":"security@huntr.dev"},{"url":"https://www.debian.org/security/2023/dsa-5411","label":"security@huntr.dev"},{"url":"https://github.com/gpac/gpac/commit/64a2e1b799352ac7d7aad1989bc06e7b0f2b01db","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://huntr.dev/bounties/d7a534cb-df7a-48ba-8ce3-46b1551a9c47","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5411","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org","exploit-available"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-11-08T04:55:08.103313Z"},"scores":{"nvd":5.5,"cna":5.8},"epss":0.04615,"epssPercentile":0.91741,"exploits":{"github":1,"githubRepos":["https://github.com/cyberark/PwnKit-Hunter"],"checkedAt":"2026-11-07T17:41:40.236Z"},"exploitAvailable":true,"ingestedAt":"2026-11-05T06:38:03.552Z","slug":"CVE-2021-4043","body":"## Overview\n\nNULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.\n\n## Affected\n\n- `gpac < 1.1.0`\n- `debian_linux = 11.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `gpac 1.1.0`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":30.3,"likelihood":0.9,"exploitation":12,"ransomware":0},"changes":[]}