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Linux Distros Unpatched Vulnerability : CVE-2026-31897

critical Nessus Plugin ID 302235

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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 3.24.0, there is an out-of- bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.
 (CVE-2026-31897)

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-2026-31897

https://security-tracker.debian.org/tracker/CVE-2026-31897

https://ubuntu.com/security/CVE-2026-31897

Plugin Details

Severity: Critical

ID: 302235

File Name: unpatched_CVE_2026_31897.nasl

Version: 1.6

Type: Local

Agent: unix

Family: Misc.

Published: 3/13/2026

Updated: 3/23/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 8.5

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

CVSS Score Source: CVE-2026-31897

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.6

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:freerdp, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:canonical:ubuntu_linux:freerdp3, p-cpe:/a:centos:centos:libwinpr, p-cpe:/a:redhat:enterprise_linux:freerdp-plugins, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:freerdp-devel, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:redhat:enterprise_linux:freerdp, cpe:/o:redhat:enterprise_linux:9, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:freerdp-server, p-cpe:/a:centos:centos:freerdp-plugins, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:freerdp2, p-cpe:/a:redhat:enterprise_linux:freerdp-libs, p-cpe:/a:redhat:enterprise_linux:libwinpr-devel, p-cpe:/a:centos:centos:freerdp, p-cpe:/a:debian:debian_linux:freerdp3, p-cpe:/a:canonical:ubuntu_linux:freerdp2, cpe:/o:centos:centos:7, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:freerdp-server, p-cpe:/a:redhat:enterprise_linux:libwinpr, p-cpe:/a:centos:centos:freerdp-devel, p-cpe:/a:centos:centos:freerdp-libs, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:libwinpr-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 3/13/2026

Reference Information

CVE: CVE-2026-31897