Memory Corruption in MediaTek seninf Allows Local Priv Escalation
CVE-2025-20801 Published on January 6, 2026

In seninf, there is a possible memory corruption due to a race condition. 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: ALPS10251210; Issue ID: MSV-4926.

NVD

Vulnerability Analysis

CVE-2025-20801 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Double-free Vulnerability?

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. When a program calls free() twice with the same argument, the program's memory management data structures become corrupted. This corruption can cause the program to crash or, in some circumstances, cause two later calls to malloc() to return the same pointer. If malloc() returns the same value twice and the program later gives the attacker control over the data that is written into this doubly-allocated memory, the program becomes vulnerable to a buffer overflow attack.

CVE-2025-20801 has been classified to as a Double-free vulnerability or weakness.


Products Associated with CVE-2025-20801

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MediaTek Mt6989
 
MediaTek Mt6878
 
MediaTek Mt6897
 
MediaTek Mt6985
 

Affected Versions

MediaTek, Inc. MediaTek chipset:

Exploit Probability

EPSS
0.01%
Percentile
0.25%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.