CVE-2023-21420 Other in Samsung Mobile Devices

What is CVE-2023-21420?

CVE-2023-21420 is a high-severity vulnerability in Samsung Android, published on 9 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use of Externally-Controlled Format String vulnerabilities in STST TA prior to SMR Jan-2023 Release 1 allows arbitrary code execution.

Weakness: CWE-134

Which versions are affected by CVE-2023-21420?

It affects 1 product.

Products include Samsung Android.

How do I fix CVE-2023-21420?

No fix has been published for CVE-2023-21420 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-21420 being exploited?

There is no known exploitation of CVE-2023-21420 in the wild and no public exploit code.

Other vulnerabilities in Samsung Android

• CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2025-21043 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2021-25487 Samsung Mobile Devices Out-of-Bounds Read Exploited High 7.3
• CVE-2021-25394 Samsung Mobile Devices Race Condition Exploited Medium 6.4
• CVE-2021-25395 Samsung Mobile Devices Race Condition Exploited Medium 6.4

All Samsung Android vulnerabilities

Sources

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

Also known as GHSA-4rmg-fpp8-38vv.