CVE-2026-21139 Missing authorization in Samsung Continuity Service for windows
Adjacent attackers can manipulate connected mobile devices due to improper access control in Samsung Continuity Service for Windows.
- 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-2026-21139?
CVE-2026-21139 is a high-severity missing authorization vulnerability in Samsung Continuity Service for windows, 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 access control in Samsung Continuity Service for windows prior to version 4.6.1217.0 allows adjacent attackers to manipulate the connected mobile device.
Which versions are affected by CVE-2026-21139?
How do I fix CVE-2026-21139?
No fix has been published for CVE-2026-21139 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-2026-21139 being exploited?
There is no known exploitation of CVE-2026-21139 in the wild and no public exploit code.
Sources
Also known as GHSA-77hm-f5fp-r3qr.