CVE-2026-95121 Integer overflow in n/a
An attacker can execute arbitrary code by providing a specially crafted MP4 file that triggers an integer overflow in the mp4v2 library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-95121?
CVE-2026-95121 is a high-severity vulnerability in n/a, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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
Weakness: CWE-190
Which versions are affected by CVE-2026-95121?
How do I fix CVE-2026-95121?
No fix has been published for CVE-2026-95121 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-95121 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-95121 exists.
Sources
Also known as GHSA-6cvh-jwvc-xjw2, UBUNTU-CVE-2026-95121.