Vulnerability Description
Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module. An attacker using a specially modified VNC client that violates the RFB protocol can bypass Qt VNC Server's password authentication and gain unauthorized remote access to the shared application, compromising the confidentiality and integrity of the session.
Related Weaknesses (CWE)
References
- https://codereview.qt-project.org/c/qt/tqtc-qtvncserver/+/759160
- https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-79680:
FAQ
What is CVE-2026-79680?
CVE-2026-79680 is a documented vulnerability. Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module. An attacker using a specially modified VNC client that violates the RFB protocol can bypass Qt...
How severe is CVE-2026-79680?
CVSS scoring is not yet available for CVE-2026-79680. Check NVD for updates.
Is there a patch for CVE-2026-79680?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.