Quick answers
- Is CVE-2026-36912 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-36912 being exploited in the wild.
- How severe is CVE-2026-36912?
- Informational severity, with a CVSS score of 5.5, published 1 July 2026.
- Which products and versions are affected?
- Aleksoid1978 MPC-BE before commit 4341cb3.
- Is there a fix for CVE-2026-36912?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-36912 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-36912?
- Check whether you run Aleksoid1978 MPC-BE at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A NULL pointer dereference exists in the AP4_AtomSampleTable::GetSample() function within the Bento4 library integration of Aleksoid1978 MPC-BE. The vulnerability is triggered when the application attempts to process a malformed MP4 file containing inconsistent sample table atoms, specifically within the AP4_Stz2Atom::GetSampleSize logic. An attacker can exploit this by providing a crafted MP4 file that leads to a memory access violation (SEGV) on the zero page. This results in a local denial-of-service (application crash). The issue was addressed in commit 4341cb3.
Affected products
- Aleksoid1978 MPC-BE before commit 4341cb3
Timeline
- 2020-05-16: disclosed: Initial discovery in underlying Bento4 library reported
- 2026-07-01: advisory: CVE published by NVD/MITRE