CVE-2022-25226 Auth bypass in ThinVNC
Unauthenticated attackers can bypass authentication in ThinVNC to gain server access and execute arbitrary code via input events.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-25226?
CVE-2022-25226 is a critical authentication bypass vulnerability in ThinVNC, published on 18 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ThinVNC version 1.0b1 allows an unauthenticated user to bypass the authentication process via 'http://thin-vnc:8080/cmd?cmd=connect' by obtaining a valid SID without any kind of authentication. It is possible to achieve code execution on the server by sending keyboard or mouse events to the server.
Which versions are affected by CVE-2022-25226?
It affects 1 product.
Products include Cybelsoft Thinvnc.
How do I fix CVE-2022-25226?
No fix has been published for CVE-2022-25226 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-25226 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-25226 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Other vulnerabilities in ThinVNC
Sources
Also known as GHSA-mvv3-c6h9-hj2q.