CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write
Remote attackers can execute arbitrary code via an out-of-bounds write in the image codec library on Samsung mobile devices.
- Exploited in the wild
- Since 10 Nov 2025
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-21042?
CVE-2025-21042 is a high-severity memory corruption vulnerability in Samsung Android, published on 12 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Out-of-bounds write in libimagecodec.quram.so prior to SMR Apr-2025 Release 1 allows remote attackers to execute arbitrary code.
Weakness: CWE-787
Which versions are affected by CVE-2025-21042?
It affects 1 product.
Products include Samsung Android.
How do I fix CVE-2025-21042?
No fix has been published for CVE-2025-21042 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 1 Dec 2025.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21042 being exploited?
Yes. Attackers have exploited CVE-2025-21042 in the wild since at least 10 Nov 2025.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Samsung Android
Sources
Also known as GHSA-jh44-w65q-8p7f.