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FreeRDP 3.0.0-beta4 before 3.32.0 contains a NULL pointer dereference in arm_handle_request_ok when an ARM endpoint returns an empty HTTP 200 body. (CVE-2026-109679)

0
Medium
VulnerabilityCVE-2026-109679gcveosvubuntu-cve-2026-109679cve-2026-109679ubuntu-16-04-ltsubuntu-pro-18-04-ltsubuntu-18-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-pro-24-04-ltsubuntu-26-04-lts
Published: 10/13/2026 (10/13/2026, 14:17:00 UTC)
Source: GCVE Database
Product: freerdp

Description

FreeRDP versions before 3.32.0 contain a vulnerability where a NULL pointer dereference occurs in the arm_handle_request_ok function when an ARM endpoint returns an empty HTTP 200 response body. This can cause the client to crash if an attacker controlling the ARM gateway returns a zero-length body. The vulnerability has a medium severity with a CVSS score of 5.3 and affects multiple Ubuntu package versions of FreeRDP.

CVSS v3.1

Score 5.3medium

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected software

Ubuntu:16.04:LTSmore threats →ghsa
freerdp
pkg:deb/ubuntu/freerdp?arch=source&distro=xenial
Affected versions
=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4
Ubuntu:Pro:18.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/bionic
Affected versions
=2.0.0~git20170725.1.1648deb+dfsg1-1=2.0.0~git20170725.1.1648deb+dfsg1-5=2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1=2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2=2.0.0~git20170725.1.1648deb+dfsg1-6=2.0.0~git20170725.1.1648deb+dfsg1-6build1=2.0.0~git20170725.1.1648deb+dfsg1-7=2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1=2.1.1+dfsg1-0ubuntu0.18.04.1=2.2.0+dfsg1-0ubuntu0.18.04.1=2.2.0+dfsg1-0ubuntu0.18.04.2=2.2.0+dfsg1-0ubuntu0.18.04.3=2.2.0+dfsg1-0ubuntu0.18.04.4=2.2.0+dfsg1-0ubuntu0.18.04.4+esm1=2.2.0+dfsg1-0ubuntu0.18.04.4+esm2=2.2.0+dfsg1-0ubuntu0.18.04.4+esm3=2.2.0+dfsg1-0ubuntu0.18.04.4+esm4=2.2.0+dfsg1-0ubuntu0.18.04.4+esm5=2.2.0+dfsg1-0ubuntu0.18.04.4+esm6
Ubuntu:18.04:LTSmore threats →ghsa
freerdp
pkg:deb/ubuntu/freerdp?arch=source&distro=bionic
Affected versions
=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
Ubuntu:Pro:20.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/focal
Affected versions
=2.0.0~git20190204.1.2693389a+dfsg1-1=2.0.0~git20190204.1.2693389a+dfsg1-2=2.0.0~git20190204.1.2693389a+dfsg1-2build1=2.0.0~git20190204.1.2693389a+dfsg1-2build2=2.1.1+dfsg1-0ubuntu0.20.04.1=2.2.0+dfsg1-0ubuntu0.20.04.1=2.2.0+dfsg1-0ubuntu0.20.04.2=2.2.0+dfsg1-0ubuntu0.20.04.3=2.2.0+dfsg1-0ubuntu0.20.04.4=2.2.0+dfsg1-0ubuntu0.20.04.5=2.2.0+dfsg1-0ubuntu0.20.04.6=2.6.1+dfsg1-0ubuntu0.20.04.1=2.6.1+dfsg1-0ubuntu0.20.04.2=2.6.1+dfsg1-0ubuntu0.20.04.2+esm1=2.6.1+dfsg1-0ubuntu0.20.04.2+esm2=2.6.1+dfsg1-0ubuntu0.20.04.2+esm3=2.6.1+dfsg1-0ubuntu0.20.04.2+esm4
Ubuntu:22.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=jammy
Affected versions
=2.3.0+dfsg1-2build1=2.3.0+dfsg1-2ubuntu1=2.3.0+dfsg1-2ubuntu2=2.4.1+dfsg1-1=2.4.1+dfsg1-1ubuntu1=2.4.1+dfsg1-1ubuntu2=2.5.0+dfsg1-1=2.6.0+dfsg1-1=2.6.1+dfsg1-1=2.6.1+dfsg1-3=2.6.1+dfsg1-3ubuntu1=2.6.1+dfsg1-3ubuntu2=2.6.1+dfsg1-3ubuntu2.1=2.6.1+dfsg1-3ubuntu2.2=2.6.1+dfsg1-3ubuntu2.3=2.6.1+dfsg1-3ubuntu2.4=2.6.1+dfsg1-3ubuntu2.5=2.6.1+dfsg1-3ubuntu2.6=2.6.1+dfsg1-3ubuntu2.7=2.6.1+dfsg1-3ubuntu2.8=2.6.1+dfsg1-3ubuntu2.9=2.6.1+dfsg1-3ubuntu2.10=2.6.1+dfsg1-3ubuntu2.11
Ubuntu:24.04:LTSmore threats →ghsa
freerdp3
pkg:deb/ubuntu/freerdp3?arch=source&distro=noble
Affected versions
<3.32.0+dfsg-0ubuntu0.24.04.1=3.4.0+dfsg1-0ubuntu2=3.4.0+dfsg1-0ubuntu3=3.4.0+dfsg1-0ubuntu4=3.5.0+dfsg1-0ubuntu1=3.5.1+dfsg1-0ubuntu1=3.5.1+dfsg1-0ubuntu1.1=3.5.1+dfsg1-0ubuntu1.2=3.5.1+dfsg1-0ubuntu1.4=3.5.1+dfsg1-0ubuntu1.5=3.5.1+dfsg1-0ubuntu1.6=3.30.0+dfsg-0ubuntu0.24.04.1=3.30.0+dfsg-0ubuntu0.24.04.2=3.31.0+dfsg-0ubuntu0.24.04.1
Ubuntu:Pro:24.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-apps/noble
Affected versions
=2.10.0+dfsg1-1.1ubuntu1=2.11.2+dfsg1-1=2.11.2+dfsg1-1build1=2.11.2+dfsg1-1build3=2.11.5+dfsg1-1build1=2.11.5+dfsg1-1build2=2.11.5+dfsg1-1ubuntu0.1~esm1=2.11.5+dfsg1-1ubuntu0.1~esm2=2.11.5+dfsg1-1ubuntu0.1~esm3=2.11.5+dfsg1-1ubuntu0.1~esm4=2.11.5+dfsg1-1ubuntu0.1~esm5=2.11.5+dfsg1-1ubuntu0.1~esm6
Ubuntu:26.04:LTSmore threats →ghsa
freerdp3
pkg:deb/ubuntu/freerdp3?arch=source&distro=resolute
Affected versions
<3.32.0+dfsg-0ubuntu0.26.04.1=3.16.0+dfsg-2=3.18.0+dfsg-1ubuntu1=3.19.0+dfsg-1=3.19.1+dfsg-1=3.20.0+dfsg-1=3.20.2+dfsg-1=3.21.0+dfsg-1=3.22.0+dfsg-1=3.24.1+dfsg-1ubuntu1=3.24.2+dfsg-1ubuntu1=3.24.2+dfsg-1ubuntu1.1=3.30.0+dfsg-0ubuntu0.26.04.1=3.30.0+dfsg-0ubuntu0.26.04.2=3.31.0+dfsg-0ubuntu0.26.04.1

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/22/2026, 17:39:16 UTC

Technical Analysis

The vulnerability in FreeRDP (CVE-2026-109679) is a NULL pointer dereference in the arm_handle_request_ok function triggered when an ARM endpoint returns an empty HTTP 200 body. Attackers who control the configured ARM gateway can exploit this by returning a zero-length HTTP 200 response body, which causes a NULL pointer to be passed to the strnlen function, resulting in a crash of the connecting FreeRDP client. This affects FreeRDP versions prior to 3.32.0, including various Ubuntu package versions.

Potential Impact

Successful exploitation results in a denial of service by crashing the FreeRDP client due to a NULL pointer dereference. There is no indication of confidentiality, integrity, or privilege escalation impact. The vulnerability requires an attacker to control the ARM gateway configured by the client.

Mitigation Recommendations

A patch is available for this vulnerability. Users should upgrade FreeRDP to version 3.32.0 or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-109679
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:26.04:LTS"]
Cvss Version
3.1

Threat ID: 6ada45034d27ba8daa6a5afb

Added to database: 10/22/2026, 17:16:51 UTC

Last enriched: 10/22/2026, 17:39:16 UTC

Last updated: 10/22/2026, 17:39:16 UTC

Views: 3

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