CVE-2026-21039 Missing authorization in Samsung Mobile Devices
Local attackers can bypass access controls to configure Theft protection settings 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-2026-21039?
CVE-2026-21039 is a medium-severity missing authorization vulnerability in Samsung Mobile Devices, published on 10 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control in Settings prior to SMR Jul-2026 Release 1 allows local attackers to configure Theft protection settings.
Which versions are affected by CVE-2026-21039?
How do I fix CVE-2026-21039?
No fix has been published for CVE-2026-21039 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-21039 being exploited?
There is no known exploitation of CVE-2026-21039 in the wild and no public exploit code.
Sources
Also known as GHSA-cq9x-745f-5vrm.