CVE-2026-21116 Memory corruption in Samsung Mobile Devices
Local attackers can exploit an out-of-bounds write in the SMKV extractor library to achieve code execution or privilege escalation on Samsung mobile devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21116?
CVE-2026-21116 is a medium-severity memory corruption vulnerability in Samsung Mobile Devices, published on 12 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Out-of-bounds write in libsmkvextractor.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.
Weakness: CWE-787
Which versions are affected by CVE-2026-21116?
How do I fix CVE-2026-21116?
No fix has been published for CVE-2026-21116 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-2026-21116 being exploited?
There is no known exploitation of CVE-2026-21116 in the wild and no public exploit code.
Sources
Also known as GHSA-cwmq-qjmw-v5m6.