FreeRDP up to 3.21.x urbdrc Channel urb_write_completion 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 classified as critical was found in FreeRDP up to 3.21.x. Affected by this issue is the function urb_write_completion of the component urbdrc Channel Handler. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2026-24681. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in FreeRDP up to 3.21.x. This vulnerability affects the function urb_write_completion of the component urbdrc Channel Handler. 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. CVE summarizes:

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, aAsynchronous bulk transfer completions can use a freed channel callback after URBDRC channel close, leading to a use after free in urb_write_completion. This vulnerability is fixed in 3.22.0.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-24681 since 01/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, 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 414f701464929c217f2509bcbd6d2c1f00f7ed73 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). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 414f701464929c217f2509bcbd6d2c1f00f7ed73

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-ccvv-hg2w-6x9j
Status: Confirmed

CVE: CVE-2026-24681 (🔒)
GCVE (CVE): GCVE-0-2026-24681
GCVE (VulDB): GCVE-100-345016
CERT Bund: WID-SEC-2026-0244 - FreeRDP: Mehrere Schwachstellen

Entryinfo

Created: 02/09/2026 21:23
Updated: 02/25/2026 23:34
Changes: 02/09/2026 21:23 (71), 02/11/2026 11:24 (11), 02/20/2026 04:30 (2), 02/25/2026 23:34 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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