Detections
Analytics
Linux Distros Unpatched Vulnerability : CVE-2025-49177
medium Nessus Plugin ID 251613
Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests. (CVE-2025-49177)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2025-49177
Plugin Details
Severity: Medium
ID: 251613
File Name: unpatched_CVE_2025_49177.nasl
Version: 1.1
Type: local
Agent: unix
Family: Misc.
Published: 8/18/2025
Updated: 8/18/2025
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.2
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2025-49177
CVSS v3
Risk Factor: Medium
Base Score: 6.1
Temporal Score: 5.3
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xwayland, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-devel, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:tigervnc-icons, p-cpe:/a:centos:centos:tigervnc-server-applet, p-cpe:/a:centos:centos:xorg-x11-server-common, p-cpe:/a:centos:centos:xorg-x11-server-xorg, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:canonical:ubuntu_linux:xorg-server, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-common, p-cpe:/a:redhat:enterprise_linux:tigervnc-server-applet, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:tigervnc-license, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xwayland-devel, p-cpe:/a:canonical:ubuntu_linux:xorg-server-hwe-16.04, p-cpe:/a:centos:centos:xorg-x11-server-xvfb, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xnest, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-source, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:xorg-server-hwe-18.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:tigervnc-license, p-cpe:/a:redhat:enterprise_linux:tigervnc-server, p-cpe:/a:centos:centos:xorg-x11-server-source, p-cpe:/a:redhat:enterprise_linux:tigervnc-selinux, p-cpe:/a:centos:centos:tigervnc-selinux, cpe:/o:redhat:enterprise_linux:8, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xephyr, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:tigervnc, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xorg, p-cpe:/a:centos:centos:xorg-x11-server-devel, p-cpe:/a:redhat:enterprise_linux:tigervnc-server-module, p-cpe:/a:debian:debian_linux:xwayland, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xdmx, p-cpe:/a:centos:centos:xorg-x11-server, p-cpe:/a:redhat:enterprise_linux:tigervnc-icons, p-cpe:/a:centos:centos:tigervnc, p-cpe:/a:centos:centos:tigervnc-server, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:xorg-x11-server-xdmx, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server, p-cpe:/a:centos:centos:xorg-x11-server-xephyr, p-cpe:/a:centos:centos:xorg-x11-server-xwayland-devel, p-cpe:/a:centos:centos:xorg-x11-server-xnest, p-cpe:/a:redhat:enterprise_linux:tigervnc-server-minimal, p-cpe:/a:centos:centos:tigervnc-server-module, p-cpe:/a:centos:centos:xorg-x11-server-xwayland, p-cpe:/a:centos:centos:tigervnc-server-minimal, p-cpe:/a:redhat:enterprise_linux:xorg-x11-server-xvfb
Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 6/17/2025
Reference Information
CVE: CVE-2025-49177