Detections
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Linux Distros Unpatched Vulnerability : CVE-2026-23883

high Nessus Plugin ID 291614

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.

 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, `xf_Pointer_New` frees `cursorPixels` on failure, then `pointer_free` calls `xf_Pointer_Free` and frees it again, triggering ASan UAF. A malicious server can trigger a clientside use after free, causing a crash (DoS) and potential heap corruption with codeexecution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue. (CVE-2026-23883)

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-2026-23883

https://security-tracker.debian.org/tracker/CVE-2026-23883

Plugin Details

Severity: High

ID: 291614

File Name: unpatched_CVE_2026_23883.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 1/19/2026

Updated: 1/19/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-23883

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:freerdp, p-cpe:/a:centos:centos:freerdp-plugins, cpe:/o:debian:debian_linux:14.0, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:libwinpr-devel, cpe:/o:centos:centos:8, cpe:/o:centos:centos:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:freerdp-server, p-cpe:/a:centos:centos:libwinpr-devel, p-cpe:/a:redhat:enterprise_linux:freerdp-plugins, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:freerdp, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:freerdp-server, p-cpe:/a:redhat:enterprise_linux:freerdp-libs, p-cpe:/a:redhat:enterprise_linux:freerdp-devel, p-cpe:/a:debian:debian_linux:freerdp2, p-cpe:/a:debian:debian_linux:freerdp3, p-cpe:/a:centos:centos:freerdp-libs, cpe:/o:redhat:enterprise_linux:6, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:libwinpr, p-cpe:/a:centos:centos:libwinpr, p-cpe:/a:centos:centos:freerdp-devel

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 1/19/2026

Reference Information

CVE: CVE-2026-23883