CVE-2019-17662

Name: CVE-2019-17662
Creator: NVD / NIST
Published: 2019-10-16T18:15:25.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 96.76%

Last modified Jun 17, 2026

CVE-2019-17662 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 96.76% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

96.76%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Cybelsoft	Thinvnc	1.0	B1

References

http://packetstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/bewest/thinvnc/issues/5Third Party Advisory
https://github.com/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.pyBroken Link
https://redteamzone.com/ThinVNC/Exploit, Third Party Advisory
http://packetstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/bewest/thinvnc/issues/5Third Party Advisory
https://github.com/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.pyBroken Link
https://redteamzone.com/ThinVNC/Exploit, Third Party Advisory

Timeline

Published: Oct 16, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17662?

How severe is CVE-2019-17662?

CVE-2019-17662 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 96.76% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17662?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17662?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST