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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : FreeRDP vulnerabilities (USN-8042-1)

high Nessus Plugin ID 299346

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8042-1 advisory.

 It was discovered that FreeRDP incorrectly handled memory under certain circumstances, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service.
 (CVE-2026-23948)

 It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24491)

 It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-24675, CVE-2026-24679, CVE-2026-24682)

 It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2026-24676, CVE-2026-24681)

 It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 25.10. (CVE-2026-24677)

 It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 25.10. (CVE-2026-24678)

 It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24680)

 It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24683, CVE-2026-24684)

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

Note that Nessus has not tested for these issues 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-8042-1

Plugin Details

Severity: High

ID: 299346

File Name: ubuntu_USN-8042-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/18/2026

Updated: 2/18/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-24679

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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:U/RL:O/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

CVSS Score Source: CVE-2026-24684

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/16/2026

Vulnerability Publication Date: 2/5/2026

Reference Information

CVE: CVE-2026-23948, CVE-2026-24491, CVE-2026-24675, CVE-2026-24676, CVE-2026-24677, CVE-2026-24678, CVE-2026-24679, CVE-2026-24680, CVE-2026-24681, CVE-2026-24682, CVE-2026-24683, CVE-2026-24684

USN: 8042-1