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.
Published: 2026-09-24
Score: 4.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 24 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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.
Title Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module
First Time appeared Qt
Qt qt
Weaknesses CWE-288
CPEs cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
Vendors & Products Qt
Qt qt
References
Metrics cvssV4_0

{'score': 4.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/V:D/RE:L'}

Subscriptions

Qt Qt
cve-icon MITRE

Status: PUBLISHED

Assigner: Qt

Published:

Updated: 2026-09-24T10:56:08.086Z

Reserved: 2026-08-25T11:34:53.548Z

Link: CVE-2026-79680

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-24T11:16:47.117

Modified: 2026-09-24T11:16:47.117

Link: CVE-2026-79680

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-288

    Authentication Bypass Using an Alternate Path or Channel