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
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 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Qt

Published:

Updated: 2026-09-24T12:18:38.627Z

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

Link: CVE-2026-79680

cve-icon Vulnrichment

Updated: 2026-09-24T12:18:25.160Z

cve-icon NVD

Status : Received

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

Modified: 2026-09-24T13:17:11.590

Link: CVE-2026-79680

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T12:30:18Z

Weaknesses