Quick answers
- Is CVE-2026-20475 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20475 being exploited in the wild.
- How severe is CVE-2026-20475?
- Medium severity, with a CVSS score of 6, published 3 August 2026.
- Which products and versions are affected?
- MediaTek MT6761 Chipset Unspecified.
- Is there a fix for CVE-2026-20475?
- 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-2026-20475 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-20475?
- Check whether you run MediaTek MT6761 Chipset, MediaTek Mt6991, MediaTek Mt6991 Firmware or one of the others listed 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
This is an out-of-bounds write vulnerability (CWE-787) in the display subsystem of affected MediaTek chipsets, caused by a missing bounds check. The vulnerability requires the attacker to have already obtained System privilege level access; it is a local privilege escalation vector for an unprivileged-to-privileged boundary crossing. Exploitation does not require user interaction. The flaw affects display processing logic and can lead to memory corruption, enabling further privilege escalation. MediaTek has issued security patch ALPS11004276 (Issue ID MSV-7748) to address this issue.
Affected products
- MediaTek MT6761 Chipset Unspecified
Timeline
- 2026-08-03: disclosed
- other: Patch ID ALPS11004276 issued; OEMs notified 2+ months prior to publication