CVE-2026-22002-VNC-Authentication-Bypass-via-Protocol-Version-Confusion

CVE-2026-22002 – VNC Authentication Bypass via Protocol Version Confusion Program Code Python vncserversim.py - VNC server with version negotiation flaw import socket, struct def handleconn: Send server version "RFB 003.008\n" conn.sendb"RFB 003.008\n" Receive client version clientver = conn.recv...

CVE-2026-79680

A flaw was found in the Qt VNC Server module. A remote attacker, by using a specially modified VNC client that violates the Remote Framebuffer RFB protocol, can bypass the password authentication mechanism. This allows the attacker to gain unauthorized remote access to the shared application,...

CVE-2026-79680

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...

CVE-2026-79680 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...

CVE-2026-79680

The Qt VNC Server module contains an authentication bypass vulnerability within its password authentication mechanism. An attacker utilizing a specially modified VNC client that violates the RFB protocol can bypass password requirements to gain unauthorized remote access to the shared application...

EUVD-2026-85846

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...

CVE-2026-79680 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...

CVE-2026-79680: Authentication Bypass Using an Alternate Path or Channel

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...

PT-2026-97783

Name of the Vulnerable Software and Affected Versions Qt VNC Server affected versions not specified Description An authentication bypass exists in the password authentication mechanism of the Qt VNC Server module. An attacker can use a modified VNC client that violates the RFB Remote Frame Buffer...

Astra Linux – Vulnerability in Vino

A issue was discovered in LibVNCServer through version 0.9.11. The function rfbProcessClientNormalMessage in rfbserver.c does not sanitize the msg.cct.length variable, allowing access to uninitialized and potentially sensitive data, or possibly causing unspecified other impacts e.g., integer...

Unity Linux 20.1060a / 20.1070a Security Update: gstreamer1-plugins-bad-free (UTSA-2026-101049)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-101049 advisory. A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer...

gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

OESA-2026-3319 libvncserver security update

libvncserver is a set of programs using the RFB Remote Frame Buffer protocol. They are designed to "export" a frame buffer via net: you set up a server and can connect to it via VNC viewers. If the server supports WebSockets which LibVNCServer does, you can also connect using an in-browser VNC...

Amazon Linux 2 : gstreamer1-plugins-bad-free, --advisory ALAS2-2026-3833 (ALAS-2026-3833)

The version of gstreamer1-plugins-bad-free installed on the remote host is prior to 1.18.4-5. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3833 advisory. A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264...

RLSA-2026:47179 Important: gstreamer1-plugins-bad-free security update

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer. Security Fixes: gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer...

GStreamer librfb: rfb_decoder_fill_rectangle() wrong write granularity causes heap out-of-bounds write

GStreamer librfb: rfbdecoderfillrectangle wrong write granularity causes heap out-of-bounds write Vulnerability Overview In rfbsrc the VNC/RFB client element of GStreamer gst-plugins-bad, rfbdecoderfillrectangle fills rectangles by writing pixels at guint32 4-byte granularity regardless of the...