CVE-2026-21131 Missing authorization in Samsung Flow
Local attackers can launch arbitrary activities with elevated privileges due to incorrect default permissions in Samsung Flow.
- 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-2026-21131?
CVE-2026-21131 is a low-severity missing authorization vulnerability in Samsung Flow, 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
Incorrect default permission in Samsung Flow prior to version 4.9.22.4 allows local attackers to launch an arbitrary activity with Samsung Flow privileges on the connected device.
Weakness: CWE-276
Which versions are affected by CVE-2026-21131?
How do I fix CVE-2026-21131?
No fix has been published for CVE-2026-21131 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-2026-21131 being exploited?
There is no known exploitation of CVE-2026-21131 in the wild and no public exploit code.
Sources
Also known as GHSA-5vp3-8vhq-vxhf.