CVE-2026-44422

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-jc9v	Exploit Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:36203
https://access.redhat.com/errata/RHSA-2026:46393
https://access.redhat.com/security/cve/CVE-2026-44422
https://bugzilla.redhat.com/show_bug.cgi?id=2483467
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-jc9v	Exploit Mitigation Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44422.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-29 20:16

Updated : 2026-07-27 13:18

NVD link : CVE-2026-44422

Mitre link : CVE-2026-44422

CVE.ORG link : CVE-2026-44422

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-415

Double Free

CWE-416

Use After Free

CWE-825

Expired Pointer Dereference

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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."}, {"lang": "es", "value": "FreeRDP es una implementaci\u00f3n gratuita del Protocolo de Escritorio Remoto. Antes de 3.26.0, el analizador NDR RDPEAR de FreeRDP acepta un ref-id de puntero NDR no nulo para m\u00faltiples campos de puntero l\u00f3gicos sin rastrear el tipo NDR esperado o la propiedad del objeto apuntado. Cuando el mismo ref-id se reutiliza en dos campos de puntero, el analizador asigna el mismo objeto de pila a ambos campos de salida. El destructor gen\u00e9rico luego recorre cada campo de forma independiente y destruye/libera ambos punteros. Esto causa un uso despu\u00e9s de liberaci\u00f3n de pila / doble liberaci\u00f3n activable por servidor malicioso en la ruta de redirecci\u00f3n de autenticaci\u00f3n RDPEAR del cliente de FreeRDP. Esta vulnerabilidad est\u00e1 corregida en 3.26.0."}], "lastModified": "2026-07-27T13:18:07.330", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "186FAA8A-CF9D-40F3-8509-DAC168BFDA2F", "versionEndExcluding": "3.26.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}