CVE-2021-25490 Weak cryptography in Samsung Mobile Devices

What is CVE-2021-25490?

CVE-2021-25490 is a medium-severity vulnerability in Google Android, published on 6 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A keyblob downgrade attack in keymaster prior to SMR Oct-2021 Release 1 allows attacker to trigger IV reuse vulnerability with privileged process.

Weakness: CWE-287

Which versions are affected by CVE-2021-25490?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-25490?

No fix has been published for CVE-2021-25490 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-25490 being exploited?

There is no known exploitation of CVE-2021-25490 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-53m3-9457-r3xr.