Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-79680 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://codereview.qt-project.org/c/qt/tqtc-qtvncserver/+/759160 TQtC
https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-79680: TQtC

Weakness Enumeration

CWE-IDCWE NameSource
CWE-288Authentication Bypass Using an Alternate Path or ChannelTQtC

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-79680
NVD Published Date:
Sep 24, 2026
NVD Last Modified:
Sep 24, 2026
Source:
TQtC
CVE-2026-79680 Details - Not Deferred