CVE-2025-27458 CVE-2025-27458

The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses...

CVE-2025-27457

CVE-2025-27457 concerns unencrypted communications between the VNC server and client(s) as stated in the NVD entry. Connected documents describe the same issue in the Endress+Hauser MEAC300-FNADE4 (CNVD/CNNVD/PT security pages), indicating traffic interception could reveal sensitive data. The pri...

CVE-2025-27457 CVE-2025-27457

All communication between the VNC server and clients is unencrypted. This allows an attacker to intercept the traffic and obtain sensitive data...

CVE-2025-27457 CVE-2025-27457

All communication between the VNC server and clients is unencrypted. This allows an attacker to intercept the traffic and obtain sensitive data...

PT-2025-27788

Name of the Vulnerable Software and Affected Versions: VNC affected versions not specified Description: The VNC application stores its passwords encrypted within the registry but uses DES for encryption. As DES is broken, the original passwords can be recovered. Recommendations: At the moment,...

PT-2025-27787 · Vnc · Vnc

Name of the Vulnerable Software and Affected Versions: VNC affected versions not specified Description: The issue concerns the VNC authentication mechanism, which uses a challenge-response system. This system relies on both the server and client using the same password for encryption. An attacker...

[SECURITY] Fedora 41 Update: tigervnc-1.15.0-6.fc41

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 ...

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...