{"id":"CVE-2021-31255","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-31255","generatedAt":"2026-10-27T22:34:05.028Z","title":"Buffer overflow in the abst_box_read function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","description":"Buffer overflow in the abst_box_read function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","published":"2021-04-19T19:15:18.000Z","lastModified":"2026-06-17T03:51:31.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-120"],"affected":["gpac/gpac"],"epss":{"score":0.01472,"percentile":0.73603,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/gpac/gpac/commit/758135e91e623d7dfe7f6aaad7aeb3f791b7a4e5","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/gpac/gpac/issues/1733","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/gpac/gpac/commit/758135e91e623d7dfe7f6aaad7aeb3f791b7a4e5","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/gpac/gpac/issues/1733","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-31255","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}