CVE-2026-20466 — MediaTek, Inc. / MediaTek chipset

Description (CNA)

In sec boot, there is a possible escalation of privilege due to a heap buffer overflow. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: AUTO00845351 (Note: For MT2737) / ALPS11072643 (Note: For MT6880, MT6890, MT6990); Issue ID: MSV-6929.

Affected (CNA)

Vendor / product	Versions
MediaTek, Inc. / MediaTek chipset	affected MT2737; affected MT6880; affected MT6890; affected MT6990

CWE

CWE-787

References

https://www.mediatek.com/product-security-bulletin/August-2026

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.