Buffer overflow in Mediatek, Inc. Mediatek Chipset
CVE-2026-20502
In vdec, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9196.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mediatek, Inc. Mediatek Chipset — versions MT2718, MT6580, MT6739
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20502?
- CVE-2026-20502 is a high-severity vulnerability in Mediatek, Inc. Mediatek Chipset, classified under Heap-based Buffer Overflow. CVSS score: 8.4/10. Published 2026-09-07.
- How severe is CVE-2026-20502?
- High severity. CVSS v3 base score is 8.4 out of 10.