CVE-2025-20656 Memory corruption in MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886, MT6895, MT6897, MT6983, MT6985, MT6989, MT6990, MT8196, MT8370, MT8390

What is CVE-2025-20656?

CVE-2025-20656 is a medium-severity memory corruption 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 DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09625423; Issue ID: MSV-3033.

Weakness: CWE-787

Which versions are affected by CVE-2025-20656?

It affects 20 products.

Products include Google Android, Linuxfoundation Yocto, Mediatek Mt6781, Mediatek Mt6789, Mediatek Mt6835, Mediatek Mt6855 and 14 more.

How do I fix CVE-2025-20656?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-20656 being exploited?

There is no known exploitation of CVE-2025-20656 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-393950961, ASB-A-393950961, GHSA-6vqr-8xjq-ghqg, M-ALPS09625423.