FreeRDP up to 3.25.x use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeRDP up to 3.25.x. It has been classified as critical. Affected by this issue is some unknown functionality. The manipulation leads to use after free. This vulnerability is traded as CVE-2026-44422. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in FreeRDP up to 3.25.x. It has been rated as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed object's expected NDR type or ownership. When the same ref-id is reused across two pointer fields, the parser assigns the same heap object to both output fields. The generic destructor later walks each field independently and destroys/frees both pointers. This causes a malicious-server-triggerable heap use-after-free / double-free in the FreeRDP client's RDPEAR authentication-redirection path. This vulnerability is fixed in 3.26.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-44422 since 05/06/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 318023 (Linux Distros Unpatched Vulnerability : CVE-2026-44422), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.26.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (318023) and EUVD (EUVD-2026-33434). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 318023
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-44422

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: FreeRDP 3.26.0

Timelineinfo

05/06/2026 CVE reserved
05/30/2026 +24 days Advisory disclosed
05/30/2026 +0 days VulDB entry created
07/29/2026 +59 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-j9q5-7g8m-jc9v
Status: Confirmed

CVE: CVE-2026-44422 (🔒)
GCVE (CVE): GCVE-0-2026-44422
GCVE (VulDB): GCVE-100-367379
EUVD: 🔒

Entryinfo

Created: 05/30/2026 07:30
Updated: 07/29/2026 00:58
Changes: 05/30/2026 07:30 (64), 05/30/2026 11:19 (1), 05/31/2026 00:14 (2), 07/03/2026 01:50 (11), 07/29/2026 00:58 (2)
Complete: 🔍
Cache ID: 216::103

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

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