Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module
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.
CVE-2026-79680
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-79680
qt
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "qt",
"modules": [
"qtvncserver"
],
"product": "qt",
"versions": [
{
"status": "affected",
"version": "6.4.0",
"lessThan": "6.8.9",
"versionType": "python"
},
{
"status": "affected",
"version": "6.9.0",
"lessThan": "6.11.3",
"versionType": "python"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-79680
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #563 · Revision 1
- Added to Heist Feed
- Publisher date