FreeRDP up to 3.21.x ecam_channel_write use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in FreeRDP up to 3.21.x. This impacts the function ecam_channel_write. This manipulation causes use after free. This vulnerability appears as CVE-2026-24678. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeRDP up to 3.21.x. It has been declared as critical. Affected by this vulnerability is the function ecam_channel_write. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability. The summary by CVE is:

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, A capture thread sends sample responses using a freed channel callback after a device channel close, leading to a use after free in ecam_channel_write. This vulnerability is fixed in 3.22.0.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-24678 since 01/23/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 299346 (Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : FreeRDP vulnerabilities (USN-8042-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.22.0 eliminates this vulnerability. Applying the patch f3ab1a16139036179d9852745fdade18fec11600 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (299346) and CERT Bund (WID-SEC-2026-0244). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source FreeRDP

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299346
Nessus Name: Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : FreeRDP vulnerabilities (USN-8042-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: FreeRDP 3.22.0
Patch: f3ab1a16139036179d9852745fdade18fec11600

Timelineinfo

01/23/2026 CVE reserved
02/09/2026 +17 days Advisory disclosed
02/09/2026 +0 days VulDB entry created
02/25/2026 +16 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-6gvg-29wx-6v7h
Status: Confirmed

CVE: CVE-2026-24678 (🔒)
GCVE (CVE): GCVE-0-2026-24678
GCVE (VulDB): GCVE-100-345013
CERT Bund: WID-SEC-2026-0244 - FreeRDP: Mehrere Schwachstellen

Entryinfo

Created: 02/09/2026 21:14
Updated: 02/25/2026 23:34
Changes: 02/09/2026 21:14 (70), 02/11/2026 11:24 (11), 02/20/2026 04:30 (2), 02/25/2026 23:34 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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