CVE-2026-21055 Missing authorization in Bixby
Local attackers can execute arbitrary commands with Bixby privileges due to improper export of application components.
- 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-2026-21055?
CVE-2026-21055 is a high-severity missing authorization vulnerability in Samsung Mobile Bixby, 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 export of android application components in Bixby prior to version 4.0.70.8 allows local attackers to execute arbitrary commands with Bixby privilege.
Which versions are affected by CVE-2026-21055?
How do I fix CVE-2026-21055?
No fix has been published for CVE-2026-21055 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-2026-21055 being exploited?
There is no known exploitation of CVE-2026-21055 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-876v-2rgp-9xrr.