CVE-2023-27327

Parallels Desktop Toolgate Time-Of-Check Time-Of-Use Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the current user on the host system. Was ZDI-CAN-18964.

• CWE-367

• https://kb.parallels.com/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-23-215/Third Party Advisory
• https://kb.parallels.com/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-23-215/Third Party Advisory

Published

May 3, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-27321OPC Foundation UA .NET Standard ConditionRefresh Resource Ex…7.5
• CVE-2023-27322Parallels Desktop Service Improper Initialization Local Priv…7.8
• CVE-2023-27323Parallels Desktop Updater Time-Of-Check Time-Of-Use Local Pr…7.8
• CVE-2023-27324Parallels Desktop Updater Improper Initialization Local Priv…7.8
• CVE-2023-27325Parallels Desktop Updater Improper Initialization Local Priv…7.8
• CVE-2023-27326Parallels Desktop Toolgate Directory Traversal Local Privile…8.2
• CVE-2023-27328Parallels Desktop Toolgate XML Injection Local Privilege Esc…7.8
• CVE-2023-27329Foxit PDF Reader Annotation Use-After-Free Remote Code Execu…7.8
• CVE-2023-2733The MStore API plugin for WordPress is vulnerable to authent…9.8
• CVE-2023-27330Foxit PDF Reader XFA Annotation Use-After-Free Remote Code E…7.8
• CVE-2023-27331Foxit PDF Reader Annotation Use-After-Free Remote Code Execu…7.8
• CVE-2023-27332TP-Link Archer AX21 tdpServer Logging Stack-based Buffer Ove…8.8