Is CVE-2026-36910 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-36910 being exploited in the wild.

How severe is CVE-2026-36910?

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-2026-36910?

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-2026-36910 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-36910?

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.

CVE-2026-36910: Aleksoid1978 MPC-BE access violation in BaseSplitterFile::Read

CVE-2026-36910 · Severity: info · CVSS 5.5 · Published 2026-07-01

MPC-BE is a popular open-source media player for Windows. A vulnerability in how the player processes MP4 video files could allow an attacker to crash the application. To exploit this, an attacker would need to trick a user into opening a specially crafted, malicious video file, resulting in a denial of service.

Technologies: Aleksoid1978 MPC-BE. Vendors: Aleksoid1978.

Quick answers

Is CVE-2026-36910 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-36910 being exploited in the wild.
How severe is CVE-2026-36910?: 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-2026-36910?: 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-2026-36910 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-36910?: 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

An access violation exists in the CBaseSplitterFile::Read function within MPC-BE's MP4 splitting logic. The vulnerability is triggered when the application attempts to parse a malformed MP4 file containing a crafted AP4_UrlAtom, leading to an invalid memory access (access violation) during a memcpy operation. This issue stems from upstream vulnerabilities in the Bento4 library integrated into MPC-BE. An attacker can achieve a denial of service (application crash) by providing a malicious MP4 file that the user must manually open. The issue was addressed in commit 4341cb3.

Affected products

Aleksoid1978 MPC-BE before commit 4341cb3

Timeline

2026-07-01: disclosed
2026-07-01: advisory

References

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