CVE-2022-25226

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.

CVSS v3.1

10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

11.03% chance of exploitation in the next 30 days, 96th percentile

Nuclei

critical

Published

2022-04-18

Updated

2024-08-03

Proof-of-concept exploits (2)

• https://fluidattacks.com/advisories/sinatra/
• krill-x7/CVE-2022-252261★ · 2025-07-16

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-25226.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2011-2523
• CVE-2022-25225
• CVE-2022-25227
• CVE-2022-25224
• CVE-2022-25228
• CVE-2022-25223