CVE-2019-17662 in the critical feed json
ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server.
published 2019-10-16 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7967
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 96.8%
- EPSS 96.8% chance of exploitation in 30 days, percentile 99.8%
- public exploits
- 2
- Metasploit, Exploit-DB, plus a Nuclei check
Summary
ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server. The vulnerability exists even when authentication is turned on during the deployment of the VNC server. The password for authentication is stored in cleartext in a file that can be read via a ../../ThinVnc.ini directory traversal attack vector.
Timeline
- First public exploit (Metasploit auxiliary/scanner/http/thinvnc_traversal)
- Published
Exploit prediction
96.76% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/scanner/http/thinvnc_traversal ThinVNC Directory Traversal metasploit auxiliary, normal rank, 2019-10-16
- EDB-47519 ThinVNC 1.0b1 - Authentication Bypass remote, 2019-10-17
- Nuclei template ThinVNC 1.0b1 - Authentication Bypass nuclei detection template
- redteamzone.com https://redteamzone.com/ThinVNC/ referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
References
-
redteamzone.com
/ThinVNC/
exploit, third-party-advisory
-
packetstormsecurity.com
/files/154896/ThinVNC-1.0b1-Authentication-Bypass.html
exploit, third-party-advisory, vdb-entry
-
github.com
/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.py
broken-link
-
github.com
/bewest/thinvnc/issues/5
third-party-advisory
Sources
- CVE List CVE-2019-17662
- NVD CVE-2019-17662
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