Linux Distros Unpatched Vulnerability : CVE-2017-18635

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages...

CVE-2025-40743

A vulnerability has been identified in SINUMERIK 828D PPU.4 All versions V4.95 SP5, SINUMERIK 828D PPU.5 All versions V5.25 SP1, SINUMERIK 840D sl All versions V4.95 SP5, SINUMERIK MC All versions V1.25 SP1, SINUMERIK MC V1.15 All versions V1.15 SP5, SINUMERIK ONE All versions V6.25 SP1, SINUMERI...

Siemens SINUMERIK

SUMMARY Siemens SINUMERIK Controllers are affected by an improper VNC password check vulnerability. Siemens has released new versions for the affected products and recommends to update to the latest versions. 2. GENERAL RECOMMENDATIONS As a general security measure, Siemens strongly recommends...

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors

...

NewStart CGSL MAIN 7.02 : qemu Multiple Vulnerabilities (NS-SA-2025-0153)

The remote NewStart CGSL host, running version MAIN 7.02, has qemu packages installed that are affected by multiple vulnerabilities: - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtionetflushtx function if guest features...

Enterprise Security Incident Analysis and Countermeasures Based on the T-Mobile Data Breach

This paper presents a comprehensive analysis of T-Mobile's critical data breaches in 2021 and 2023, alongside a full-spectrum security audit targeting its systems, infrastructure, and publicly exposed endpoints. By combining case-based vulnerability assessments with active ethical hacking...

Medium: tigervnc

Issue Overview: 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. CVE-2025-49175 A flaw was found in the Big Requests extension. The reque...

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...

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: 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: 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...

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...

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-2025-27458

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-2025-27459

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...

[SECURITY] Fedora 41 Update: guacamole-server-1.6.0-1.fc41

Guacamole is an HTML5 remote desktop gateway. Guacamole provides access to desktop environments using remote desktop protoc ols like VNC and RDP. A centralized server acts as a tunnel and proxy, allowing access to multiple desktops through a web browser. No browser plugins are needed, and no clie...