Remote DoS via Improper Input Validation in MediaTek Modem
CVE-2026-20525 Published on October 5, 2026
In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01870473 / MOLY00814393; Issue ID: MSV-9041.
Vulnerability Analysis
Attack Vector:
ADJACENT_NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH
Weakness Type
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2026-20525 has been classified to as an assertion failure vulnerability or weakness.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT2716 is affected.
- Version MT6835 is affected.
- Version MT6858 is affected.
- Version MT6878 is affected.
- Version MT6881 is affected.
- Version MT6897 is affected.
- Version MT6899 is affected.
- Version MT6982 is affected.
- Version MT6986 is affected.
- Version MT6988 is affected.
- Version MT6991 is affected.
- Version MT6993 is affected.
- Version MT8668 is affected.
- Version MT8676 is affected.
- Version MT8678 is affected.
- Version MT8755 is affected.
- Version MT8775 is affected.
- Version MT8792 is affected.
- Version MT8793 is affected.
- Version MT8863 is affected.
- Version MT8873 is affected.
- Version MT8883 is affected.