xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors

A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash...

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in Big Requests Extension

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check...

xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Unprocessed Client Request Due to Bytes to Ignore

A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service...

Important: tigervnc security update

Virtual Network Computing VNC is a remote display system which allows users 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. TigerVNC is a suite of VNC servers and clients...

CVE-2025-49179 Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension

A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks...

CVE-2025-46352

The CS5000 Fire Panel is vulnerable due to a hard-coded password that runs on a VNC server and is visible as a string in the binary responsible for running VNC. This password cannot be altered, allowing anyone with knowledge of it to gain remote access to the panel. Such access could enable an...

CVE-2025-46352

The CS5000 Fire Panel is vulnerable due to a hard-coded password that runs on a VNC server and is visible as a string in the binary responsible for running VNC. This password cannot be altered, allowing anyone with knowledge of it to gain remote access to the panel. Such access could enable an...

CVE-2025-46352

CVE-2025-46352 affects the Consilium Safety CS5000 Fire Panel. The vulnerability stems from a hard-coded password used by a VNC server bundled with the panel, exposed as a string in the binary and not alterable by users. With network access, an attacker can remotely log in and operate the panel, ...

Fire detection system been pwned? You’re not going to sea

TL;DR Hardcoded SSH and VNC credentials found on Consilium Salwico CS5000 panels SSH access allows OS-level interaction, and VNC access gives UI control It may be possible to disable the fire detection system Attempts to disclose vulnerability to Consilium multiple times since 2022 Consilium...

Malicious code in vnc-viewer (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware b409d2b1ea3535147d71ddf23425fe3fe4d437ce0d5af96f32f80c094bccc009 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

MAL-2025-4455 Malicious code in vnc-viewer (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware b409d2b1ea3535147d71ddf23425fe3fe4d437ce0d5af96f32f80c094bccc009 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

CVE-2023-47250

In mprivacy-tools before 2.0.406g in m-privacy TightGate-Pro Server, broken Access Control on X11 server sockets allows authenticated attackers with access to a VNC session to access the X11 desktops of other users by specifying their DISPLAY ID. This allows complete control of their desktop,...

CVE-2023-47251

In mprivacy-tools before 2.0.406g in m-privacy TightGate-Pro Server, a Directory Traversal in the print function of the VNC service allows authenticated attackers with access to a VNC session to automatically transfer malicious PDF documents by moving them into the .spool directory, and then...

CVE-2022-41325

An integer overflow in the VNC module in VideoLAN VLC Media Player through 3.0.17.4 allows attackers, by tricking a user into opening a crafted playlist or connecting to a rogue VNC server, to crash VLC or execute code under some conditions...

CVE-2022-25227

Thinfinity VNC v4.0.0.1 contains a Cross-Origin Resource Sharing CORS vulnerability which can allow an unprivileged remote attacker, if they can trick a user into browse malicious site, to obtain an 'ID' that can be used to send websocket requests and achieve RCE...

CVE-2022-41975

RealVNC VNC Server before 6.11.0 and VNC Viewer before 6.22.826 on Windows allow local privilege escalation via MSI installer Repair mode...

CVE-2013-5135

Format string vulnerability in Screen Sharing Server in Apple Mac OS X before 10.9 and Apple Remote Desktop before 3.5.4 allows remote attackers to execute arbitrary code via format string specifiers in a VNC username...

CVE-2015-9254

Datto ALTO and SIRIS devices have a default VNC password...

CVE-2002-2088

The MOSIX Project clump/os 5.4 creates a default VNC account without a password, which allows remote attackers to gain root access...

VNC. RDP for all to see

TL;DR VNC still remains in some legacy environments due to legacy deployments and ease of use. Without proprietary extensions, VNC transmits data without encryption, making credential theft through packet sniffing possible. The captured challenge and response between a VNC client and server can...