SUSE-SU-2026:4024-1 Security update for LibVNCServer

This update for LibVNCServer fixes the following issue: - CVE-2026-50538: a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker- controlled data past the end of its framebuffer bsc1276218...

SUSE SLES15 Security Update : LibVNCServer (SUSE-SU-2026:3803-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:3803-1 advisory. This update for LibVNCServer fixes the following issue: - CVE-2026-50538: a malicious or man-in-the-middle VNC server can force a connecting libvncclie...

SUSE CVE-2026-50538

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

Debian dla-4755 : libvncclient1 - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4755 advisory. - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4755-1 [email protected]...

CVE-2026-50538

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538 libvncclient Tight decoder has an attacker-controlled heap out-of-bounds write

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538

LibVNCClient (part of the LibVNCServer project) versions 0.9.12 through 0.9.15 contain an out-of-bounds heap write in the Tight decoder . A malicious or man-in-the-middle VNC server can trigger this by sending a single crafted FramebufferUpdate message, writing attacker-controlled data past the e...

EUVD-2026-64167

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538 libvncclient Tight decoder has an attacker-controlled heap out-of-bounds write

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

Amazon Linux 2 : qemu, --advisory ALAS2-2026-3866 (ALAS-2026-3866)

The version of qemu installed on the remote host is prior to 3.1.0-8. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3866 advisory. In QEMU's VNC server implementation ui/vnc.c, the setpixelformat function does not properly validate the redmax, greenmax, an...

Important: qemu

Issue Overview: In QEMU's VNC server implementation ui/vnc.c, the setpixelformat function does not properly validate the redmax, greenmax, and bluemax fields from a client's SetPixelFormat message. These fields are received as 16-bit values but are stored internally as uint8t. A malicious VNC...

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...

RHEL 8 : gstreamer1-plugins-bad-free (RHSA-2026:47075)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:47075 advisory. GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package...

RHEL 7 : gstreamer1-plugins-bad-free (RHSA-2026:47176)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:47176 advisory. GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package...

Vulnerability handling in Fortinet FortiSandbox

Fortinet has identified a vulnerability in FortiSandbox. This vulnerability relates to an exposure or resource issue with the wrong spheres CWE-668 in the VNC-server component used within FortiSandbox’s scanning virtual machines. Unauthorized attackers can send network requests to gain access to...

EUVD-2026-43710

A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.3 through 4.4.8 may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests...

Unauthenticated VNC access exposed on all interfaces

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CVE-2026-59835: Exposure of Resource to Wrong Sphere

A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.3 through 4.4.8 may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests...

RLSA-2026:37130 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: gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle i...

ALSA-2026:37130 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: gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle i...