Use After Free in Mediatek, Inc. Mediatek Chipset
CVE-2026-20511
In SurfaceFlinger, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11123860; Issue ID: MSV-8890.
Vulnerability class: Use-After-Free
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mediatek, Inc. Mediatek Chipset — versions MT6858, MT6881, MT6993
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20511?
- CVE-2026-20511 is a medium-severity vulnerability in Mediatek, Inc. Mediatek Chipset, classified under Use After Free. CVSS score: 6.7/10. Published 2026-09-07.
- How severe is CVE-2026-20511?
- Medium severity. CVSS v3 base score is 6.7 out of 10.