CVE-2022-25226 in the critical feed json
ThinVNC version 1.0b1 allows an unauthenticated user to bypass the authentication process via 'http://thin-vnc:8080/cmd?cmd=connect' by obt…
published 2022-04-18 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-29925
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 11.0%
- EPSS 11.0% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Exploit prediction
10.99% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template ThinVNC - Authentication Bypass nuclei detection template
- fluidattacks.com https://fluidattacks.com/advisories/sinatra/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a ThinVNC
References
-
fluidattacks.com
/advisories/sinatra/
exploit, third-party-advisory
Sources
- CVE List CVE-2022-25226
- NVD CVE-2022-25226
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.