CVE-2026-18263

Parallels RAS Client RDP Backend Service Exposed Dangerous Function Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels RAS Client. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the RAS RDP Backend Service. The issue results from an exposed dangerous function. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-28886.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-26-556/

Configurations

No configuration.

History

18 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de escalada de privilegios local por función peligrosa expuesta en el servicio de backend RDP del cliente de Parallels RAS. Esta vulnerabilidad permite a atacantes locales escalar privilegios en instalaciones afectadas de Parallels RAS Cliente. Un atacante debe primero obtener la capacidad de ejecutar código con bajos privilegios en el sistema objetivo para explotar esta vulnerabilidad. La falla específica existe dentro del servicio de backend RDP de RAS. El problema resulta de una función peligrosa expuesta. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto de SYSTEM. Fue ZDI-CAN-28886.

Information

Published : 2026-08-20 17:17

Updated : 2026-10-18 20:10

NVD link : CVE-2026-18263

Mitre link : CVE-2026-18263

CVE.ORG link : CVE-2026-18263

JSON object : View

Products Affected

No product.

CWE

CWE-749

Exposed Dangerous Method or Function

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