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...

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 Gstreamer: 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...

[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...

DEBIAN-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...

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...

CVE-2026-52720

GStreamer: librfb (RFB/VNC client) is affected by a heap buffer overflow caused by improper bounds checking of rectangle dimensions, allowing a malicious VNC server to send a rectangle extending beyond the framebuffer. This can lead to an out-of-bounds heap write and, per the report, potential co...

CVE-2026-52720 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...

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...

RHEL 9 : tigervnc (RHSA-2026:22424)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:22424 advisory. Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine...

qemu-kvm: VNC WebSocket handshake use-after-free

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network acces...