MediaTek imgsys OOB Write in imgsys Leads to Local Priv Escalation
CVE-2026-20409 Published on February 2, 2026
In imgsys, there is a possible out of bounds write due to a missing bounds check. 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: ALPS10363246; Issue ID: MSV-5779.
Vulnerability Analysis
CVE-2026-20409 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-20409 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-20409
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Affected Versions
MediaTek, Inc. MT6897, MT6989 Version Android 15.0 is affected by CVE-2026-20409Exploit Probability
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.