CVE-2026-21123 Privilege escalation in Samsung Mobile Devices
Local attackers with root privileges can access tied profile data before first unlock due to improper privilege management in Samsung mobile devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21123?
CVE-2026-21123 is a medium-severity 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
Improper privilege management in Locksettings prior to SMR Oct-2026 Release 1 allows local privileged attackers with root privilege to access data of the tied profile in before first unlock.
Weakness: CWE-269
Which versions are affected by CVE-2026-21123?
How do I fix CVE-2026-21123?
No fix has been published for CVE-2026-21123 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21123 being exploited?
There is no known exploitation of CVE-2026-21123 in the wild and no public exploit code.
Sources
Also known as GHSA-qmqp-2578-gvhp.