FreeRDP up to 3.21.x audin_server_recv_formats heap-based overflow

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

Summaryinfo

A vulnerability has been found in FreeRDP up to 3.21.x and classified as critical. This issue affects the function audin_server_recv_formats. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2026-24682. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in FreeRDP up to 3.21.x and classified as critical. Affected by this vulnerability is the function audin_server_recv_formats. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). 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, audin_server_recv_formats frees an incorrect number of audio formats on parse failure (i + i), leading to out-of-bounds access in audio_formats_free. This vulnerability is fixed in 3.22.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-24682 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 of the vulnerability are known, but there is no available exploit.

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 1c5c74223179d425a1ce6dbbb6a3dd2a958b7aee 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). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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: Heap-based overflow
CWE: CWE-122 / 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: 1c5c74223179d425a1ce6dbbb6a3dd2a958b7aee

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-vcw2-pqgw-mx6g
Status: Confirmed

CVE: CVE-2026-24682 (🔒)
GCVE (CVE): GCVE-0-2026-24682
GCVE (VulDB): GCVE-100-345019
CERT Bund: WID-SEC-2026-0244 - FreeRDP: Mehrere Schwachstellen

Entryinfo

Created: 02/09/2026 21:23
Updated: 02/25/2026 23:45
Changes: 02/09/2026 21:23 (70), 02/11/2026 11:24 (11), 02/18/2026 22:43 (2), 02/25/2026 23:45 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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