CVE-2025-20657 Privilege escalation in MT6765, MT6768, MT6781, MT6789, MT6833, MT6853, MT6877, MT6885, MT8768, MT8771, MT8781, MT8786, MT8791T

What is CVE-2025-20657?

CVE-2025-20657 is a medium-severity vulnerability in Google Android, published on 7 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In vdec, there is a possible permission bypass due to improper input validation. 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: ALPS09486425; Issue ID: MSV-2609.

Weakness: CWE-787

Which versions are affected by CVE-2025-20657?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2025-20657?

Apply the vendor's patch.

Is CVE-2025-20657 being exploited?

There is no known exploitation of CVE-2025-20657 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-393950963, ASB-A-393950963, GHSA-qr6w-v3fj-8cj6, M-ALPS09486425.