MediaTek Telephony Escalation of Privilege via Missing Permission
CVE-2026-20483 Published on August 3, 2026
In Telephony, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11087526; Issue ID: MSV-8243.
Vulnerability Analysis
CVE-2026-20483 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-20483 has been classified to as an AuthZ vulnerability or weakness.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT6739 is affected.
- Version MT6761 is affected.
- Version MT6765 is affected.
- Version MT6768 is affected.
- Version MT6781 is affected.
- Version MT6789 is affected.
- Version MT6833 is affected.
- Version MT6835 is affected.
- Version MT6853 is affected.
- Version MT6855 is affected.
- Version MT6877 is affected.
- Version MT6878 is affected.
- Version MT6879 is affected.
- Version MT6883 is affected.
- Version MT6885 is affected.
- Version MT6886 is affected.
- Version MT6889 is affected.
- Version MT6893 is affected.
- Version MT6895 is affected.
- Version MT6897 is affected.
- Version MT6983 is affected.
- Version MT6985 is affected.
- Version MT6989 is affected.
- Version MT6991 is affected.
- Version MT6993 is affected.
- Version MT8766 is affected.
- Version MT8766R is affected.
- Version MT8768 is affected.
- Version MT8775 is affected.
- Version MT8781 is affected.
- Version MT8792 is affected.
- Version MT8796 is affected.
- Version MT8873 is affected.
- Version MT8883 is affected.
- Version MT8893 is affected.