Astra Linux – Vulnerability in vlc

An integer overflow in the VNC module of the VideoLAN VLC Media Player, as of version 3.0.17.4, allows attackers to exploit this vulnerability by tricking users into opening a specially crafted playlist or connecting to a malicious VNC server. This can result in the crash of the VLC player or the...

Astra Linux – Vulnerability in Qemu

An integer underflow issue was discovered in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could exploit this flaw to render QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service...

Important: gstreamer1-plugins-bad-free

Issue Overview: 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...

CVE-2026-65313 Use of hard-coded VNC credentials in the engineering-workstation provisioning

A provisioning script used when installing HIPASE-250 formerly 250 SCALA engineering workstations sets a fixed, hard-coded x11vnc password. Because the same credential is applied to every workstation provisioned this way, an attacker with adjacent-network access who knows the password can gain VN...

gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb

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...

gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb

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...

EUVD-2026-49449

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing...

EUVD-2026-45182

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager 9.1.x before 9.1.9 and 8.4.x before 8.4.19; qemu-server 9.1.x before 9.1.7 and 8.4.x before 8.4.7; and pve-container 6.1.x before 6.1.3 and 5.3.x before 5.3.4 allows an attacker wit...

CVE-2026-51082

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 PVE 9.x and before 5.3.4 PVE 8.x allows an attacker with...

The vulnerability of the graphical user interface of the FortiSandbox threat detection and mitigation system allows a intruder to gain unauthorized access to the VNC server of virtual machines.

The vulnerability of the graphical user interface of the FortiSandbox threat detection and mitigation system is related to the disclosure of information in the erroneous data area. Exploiting this vulnerability can allow an attacker, operating remotely, to gain unauthorized access to the VNC serv...

CVE-2026-59835

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...

PT-2026-58073

Name of the Vulnerable Software and Affected Versions FortiSandbox versions 5.0.0 through 5.0.2 FortiSandbox versions 4.4.3 through 4.4.8 Description An exposure of resource to wrong sphere issue allows an unauthenticated attacker to access the VNC server of virtual machines performing malware...

RockyLinux 8 : gstreamer1-plugins-bad-free (RLSA-2026:37130)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:37130 advisory. gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb CVE-2026-52720 gstreamer1-plugins-bad-free:...

CVE-2026-59691 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...

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...

gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb

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...

TigerVNC accessible via the network and not just via a UNIX socket as intended

Summaryjupyter-remote-desktop-proxy was meant to rely on UNIX sockets readable only by the current user since version 3.0.0, but when used with TigerVNC, the VNC server started by jupyter-remote-desktop-proxy were still accessible via the network.This vulnerability does not affect users having...

[SECURITY] Fedora 43 Update: tigervnc-1.16.2-4.fc43

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, but from anywhere on the Internet and from a wide variety of machine architectures. This package contains a client which will allow you ...

[SECURITY] Fedora 44 Update: tigervnc-1.16.2-4.fc44

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, but from anywhere on the Internet and from a wide variety of machine architectures. This package contains a client which will allow you ...

SUSE 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...