CVE-2026-21047 Memory corruption in Samsung Mobile Devices
Remote attackers can execute arbitrary code via an out-of-bounds write in the ImsService component of Samsung mobile devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21047?
CVE-2026-21047 is a high-severity memory corruption vulnerability in Samsung Mobile Devices, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds write in ImsService prior to SMR Jul-2026 Release 1 allows remote attackers to potentially execute arbitrary code.
Weakness: CWE-787
Which versions are affected by CVE-2026-21047?
How do I fix CVE-2026-21047?
No fix has been published for CVE-2026-21047 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-2026-21047 being exploited?
There is no known exploitation of CVE-2026-21047 in the wild and no public exploit code.
Sources
Also known as GHSA-72fr-c9f3-m374.