CVE-2026-95121

EUVD-2026-98805
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 unchecked offset subtraction
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 6.59%
Common Weakness Enumeration
References
https://gist.github.com/1820893135-pixel/c56b6a1627453e67ca2fb7e29bae95c6
https://github.com/TechSmith/mp4v2/issues/98
https://github.com/TechSmith/mp4v2/pull/100
https://github.com/TechSmith/mp4v2/pull/100/changes/c7f4e1da1b75996a053b05b69be8e738bf77a26c
https://github.com/TechSmith/mp4v2/issues/98