Quick answers
- Is CVE-2026-36908 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-36908 being exploited in the wild.
- How severe is CVE-2026-36908?
- Informational severity, with a CVSS score of 5.5, published 26 June 2026.
- Which products and versions are affected?
- Axiomatic Systems Bento4 before v1.8.9.
- Is there a fix for CVE-2026-36908?
- 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-2026-36908 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-36908?
- Check whether you run Axiomatic Systems Bento4 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 vulnerability exists in the AP4_Array<AP4_TrunAtom::Entry>::EnsureCapacity component of Bento4. The issue is triggered when the library attempts to process a Track Run Atom (trun) within a crafted MP4 file, leading to an uncontrolled memory allocation or stack exhaustion during capacity adjustment. An attacker can exploit this by providing a malicious MP4 file to an application linked with Bento4, such as mp42aac or media players like MPC-BE. This results in an out-of-memory (OOM) condition or a crash, causing a denial of service. The vulnerability is addressed in version 1.8.9.
Affected products
- axiomatic-systems Bento4 before v1.8.9
Timeline
- 2023-03-14: disclosed: Initial issue reported on GitHub
- 2026-06-26: advisory: CVE published to NVD