{"id":"CVE-2026-95121","title":"An issue in mp4v2 2.0.0 allows an attacker to execute arbitrary code via the MP4RtpAtom::ReadHntiType() in src/atom_rtp.cpp","summary":"An issue in mp4v2 2.0.0 allows an attacker to execute arbitrary code via the MP4RtpAtom::ReadHntiType() in src/atom_rtp.cpp. A specially crafted MP4 file can cause an undersized rtp atom to produce a near-2^64 allocation size through an …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-190"],"published":"2026-10-13","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:56:15.773","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-95121","references":[{"url":"https://gist.github.com/1820893135-pixel/c56b6a1627453e67ca2fb7e29bae95c6","label":"cve@mitre.org"},{"url":"https://github.com/TechSmith/mp4v2/issues/98","label":"cve@mitre.org"},{"url":"https://github.com/TechSmith/mp4v2/pull/100","label":"cve@mitre.org"},{"url":"https://github.com/TechSmith/mp4v2/pull/100/changes/c7f4e1da1b75996a053b05b69be8e738bf77a26c","label":"cve@mitre.org"},{"url":"https://github.com/TechSmith/mp4v2/issues/98","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00201,"epssPercentile":0.09841,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-14T19:18:34.978156Z"},"ingestedAt":"2026-10-13T15:33:40.085Z","slug":"CVE-2026-95121","body":"## Overview\n\nAn issue in mp4v2 2.0.0 allows an attacker to execute arbitrary code via the MP4RtpAtom::ReadHntiType() in src/atom_rtp.cpp. A specially crafted MP4 file can cause an undersized rtp atom to produce a near-2^64 allocation size through an unchecked offset subtraction\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":221870,"id":"CVE-2026-95121","ts":1792035878571,"field":"exploit_available","old":"false","new":"true"},{"seq":220485,"id":"CVE-2026-95121","ts":1792011342961,"field":"cvss","old":null,"new":"7.8"},{"seq":220484,"id":"CVE-2026-95121","ts":1792011342961,"field":"severity","old":"none","new":"high"}]}