85 matches found
CVE-2026-22002-VNC-Authentication-Bypass-via-Protocol-Version-Confusion
CVE-2026-22002 – VNC Authentication Bypass via Protocol Version Confusion Program Code Python root@kitploit: 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...
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...
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...
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...
CVE-2026-41252
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices ar...
Amazon Linux 2023 : gstreamer1-plugin-openh264, gstreamer1-plugins-bad-free, gstreamer1-plugins-bad-free-devel (ALAS2023-2026-1917)
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1917 advisory. A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gstav1parserparsetilelistobu function passes a byte count to a bit-reader API that expects a...
Important: gstreamer1-plugins-bad-free
Issue Overview: A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gstav1parserparsetilelistobu function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into...
CVE-2026-7838 UltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason length
UltraVNC viewer through 1.8.2.2 contains an integer overflow leading to a heap buffer overflow in the RFB protocol failure-response parsing path. In vncviewer/ClientConnection.cpp, the 4-byte network-supplied reasonLen field type CARD32 is passed as reasonLen+1 to CheckBufferSize. Because both...
EUVD-2026-36803
A heap buffer overflow vulnerability was found in GStreamer's librfb RFB/VNC client. The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a...
CVE-2026-52720
A heap buffer overflow vulnerability was found in GStreamer's librfb RFB/VNC client. The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a...
MiracleLinux 3 : vnc-4.1.2-9.6AXS3 (AXSA:2009-21:01)
The remote MiracleLinux 3 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2009-21:01 advisory. Virtual Network Computing VNC is a remote display system which allows you to view a computing 'desktop' environment not only on the machine where it is running...