CVE-2021-25518 Memory corruption in Samsung Mobile Devices

What is CVE-2021-25518?

CVE-2021-25518 is a medium-severity memory corruption vulnerability in Google Android, published on 8 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An improper boundary check in secure_log of LDFW and BL31 prior to SMR Dec-2021 Release 1 allows arbitrary memory write and code execution.

Weakness: CWE-787, CWE-119

Which versions are affected by CVE-2021-25518?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-25518?

No fix has been published for CVE-2021-25518 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2021-25518 being exploited?

There is no known exploitation of CVE-2021-25518 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 GHSA-pv7r-v4qc-v4gq.