Quick answers
- Is CVE-2026-20464 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20464 being exploited in the wild.
- How severe is CVE-2026-20464?
- Medium severity, with a CVSS score of 6.5, published 3 August 2026.
- Which products and versions are affected?
- MediaTek MT6761; MediaTek MT8766; MediaTek MT8768.
- Is there a fix for CVE-2026-20464?
- 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-2026-20464 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-20464?
- Check whether you run MediaTek Mt6761, MediaTek Mt8766 or MediaTek Mt8768. 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
The vulnerability is a CWE-787 out-of-bounds write caused by an integer overflow in the HEVC decoder subcomponent. An attacker who has already obtained system privilege can trigger this flaw without requiring user interaction. The integer overflow leads to incorrect buffer boundary calculations, allowing write operations beyond allocated memory regions. This can result in code execution or further privilege escalation. Patches are available via Patch ID ALPS11104718.
Affected products
- MediaTek MT6761
- MediaTek MT8766
- MediaTek MT8768
Timeline
- 2026-08-03: disclosed