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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : FreeRDP vulnerabilities (USN-8432-1)

high Nessus Plugin ID 321366

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8432-1 advisory.

 It was discovered that FreeRDP incorrectly handled memory under certain circumstances, which could lead to an out-of-bounds heap write. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-45700)

 In addition, this update fixes a regression introduced in USN-8105-1. The update introduces a complete fix for CVE-2026-22858, CVE-2026-23732 and CVE-2026-25952 in Ubuntu 24.04 LTS and Ubuntu 25.10.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8432-1

Plugin Details

Severity: High

ID: 321366

File Name: ubuntu_USN-8432-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/17/2026

Updated: 6/17/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-45700

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:O/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:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:freerdp-x11, p-cpe:/a:canonical:ubuntu_linux:freerdp-wayland, p-cpe:/a:canonical:ubuntu_linux:libuwac0-0, p-cpe:/a:canonical:ubuntu_linux:freerdp-proxy, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-client2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-server2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp2-2, p-cpe:/a:canonical:ubuntu_linux:freerdp2-dev, p-cpe:/a:canonical:ubuntu_linux:freerdp2-shadow-x11, p-cpe:/a:canonical:ubuntu_linux:freerdp2-wayland, p-cpe:/a:canonical:ubuntu_linux:freerdp2-x11, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow-subsystem2-2, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow2-2, p-cpe:/a:canonical:ubuntu_linux:libuwac0-dev, p-cpe:/a:canonical:ubuntu_linux:libwinpr-tools2-2, p-cpe:/a:canonical:ubuntu_linux:libwinpr2-2, p-cpe:/a:canonical:ubuntu_linux:libwinpr2-dev, p-cpe:/a:canonical:ubuntu_linux:winpr-utils, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:freerdp3-dev, p-cpe:/a:canonical:ubuntu_linux:freerdp3-shadow-x11, p-cpe:/a:canonical:ubuntu_linux:freerdp3-wayland, p-cpe:/a:canonical:ubuntu_linux:freerdp3-x11, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-client3-3, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-server3-3, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow-subsystem3-3, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow3-3, p-cpe:/a:canonical:ubuntu_linux:libfreerdp3-3, p-cpe:/a:canonical:ubuntu_linux:libwinpr-tools3-3, p-cpe:/a:canonical:ubuntu_linux:libwinpr3-3, p-cpe:/a:canonical:ubuntu_linux:libwinpr3-dev, p-cpe:/a:canonical:ubuntu_linux:winpr3-utils, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-client2-2t64, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-server2-2t64, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow-subsystem2-2t64, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-shadow2-2t64, p-cpe:/a:canonical:ubuntu_linux:libfreerdp2-2t64, p-cpe:/a:canonical:ubuntu_linux:libuwac0-0t64, p-cpe:/a:canonical:ubuntu_linux:libwinpr-tools2-2t64, p-cpe:/a:canonical:ubuntu_linux:libwinpr2-2t64, p-cpe:/a:canonical:ubuntu_linux:freerdp3-proxy, p-cpe:/a:canonical:ubuntu_linux:freerdp3-proxy-modules, p-cpe:/a:canonical:ubuntu_linux:freerdp3-sdl, p-cpe:/a:canonical:ubuntu_linux:libfreerdp-server-proxy3-3, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:freerdp-sdl, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:freerdp-proxy-modules, p-cpe:/a:canonical:ubuntu_linux:freerdp-shadow-x11

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 5/29/2026

Reference Information

CVE: CVE-2026-45700

USN: 8432-1