Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2025-20657
CVE-2025-20657:
NixOS vulnerability analysis and mitigation
Overview
CVE-2025-20657 is a high-severity vulnerability discovered in MediaTek's vdec component. The vulnerability was first reported on April 7, 2025, and involves a permission bypass due to improper input validation. This security flaw affects various MediaTek chipsets used in Android devices running versions 12.0 and 15.0 (MediaTek Bulletin).
Technical details
The vulnerability is classified as an Out-of-bounds Write (CWE-787) issue. It received a CVSS v3.1 Base Score of 6.7 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. The vulnerability affects multiple MediaTek chipsets including MT6765, MT6768, MT6781, MT6789, MT6833, MT6853, MT6877, MT6885, MT8768, MT8771, MT8781, MT8786, and MT8791T (NVD).
Impact
The vulnerability could lead to local escalation of privilege if a malicious actor has already obtained System privilege. No user interaction is required for exploitation, making it particularly concerning for system security (MediaTek Bulletin).
Mitigation and workarounds
MediaTek has addressed this vulnerability through a security patch (Patch ID: ALPS09486425; Issue ID: MSV-2609). Device manufacturers have been notified of the issue and corresponding security patches at least two months before the public disclosure (MediaTek Bulletin).
Additional resources
Source: This report was generated using AI
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