CVE-2026-7135 GPAC MP4Box box_code_base.c elng_box_read out-of-bounds
A local attacker can trigger an out-of-bounds read in GPAC MP4Box via a crafted file, potentially causing crashes or leaking memory.
- 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-2026-7135?
CVE-2026-7135 is a medium-severity memory corruption vulnerability in GPAC, published on 27 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security flaw has been discovered in GPAC up to 26.03-DEV-rev105-g8f39a1eb3-master. Affected by this vulnerability is the function elng_box_read of the file src/isomedia/box_code_base.c of the component MP4Box. Performing a manipulation of the argument elng results in out-of-bounds read. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The patch is named cf6ac48c972eaaee2af270adc3f36615325deb3e. The affected component should be upgraded.
Which versions are affected by CVE-2026-7135?
How do I fix CVE-2026-7135?
No fix has been published for CVE-2026-7135 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-7135 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7135 exists.
Sources
Also known as DEBIAN-CVE-2026-7135, GHSA-75mr-r5qh-vfwp, UBUNTU-CVE-2026-7135.