Linux Distros Unpatched Vulnerability : CVE-2026-22853

high Nessus Plugin ID 284685

Language:

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 3.20.1, RDPEAR's NDR array reader does not perform bounds checking on the onwire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1. (CVE-2026-22853)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 284685

File Name: unpatched_CVE_2026_22853.nasl

Version: 1.12

Type: local

Agent: unix

Family: Misc.

Published: 1/14/2026

Updated: 3/20/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-22853

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.3

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:P/RL:U/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.7

Threat Score: 6.8

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:freerdp2, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:freerdp, p-cpe:/a:redhat:enterprise_linux:freerdp-devel, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:debian:debian_linux:freerdp3, p-cpe:/a:redhat:enterprise_linux:freerdp-plugins, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:freerdp-libs

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: 1/14/2026

Reference Information

CVE: CVE-2026-22853

Detections

Analytics