CVE-2025-36927 Memory corruption in Android

High 7.8 Published 11 Dec 2025 Updated 26 Feb 2026

A missing bounds check in the Android Tachyon server allows local attackers to achieve privilege escalation via an out-of-bounds write.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2025-36927?

CVE-2025-36927 is a high-severity memory corruption vulnerability in Google Android, published on 11 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In GetTachyonCommand of tachyon_server_common.h, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Weakness: CWE-787, CWE-120

Which versions are affected by CVE-2025-36927?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2025-36927?

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-2025-36927 being exploited?

There is no known exploitation of CVE-2025-36927 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as A-421014835, GHSA-57qx-q5pj-hhfc, PUB-A-421014835.