CVE-2021-31427

This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 15.1.5-47309. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Open Tools Gate component. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13082.

• CWE-367
• CWE-367
• CWE-667

• https://kb.parallels.com/en/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-435/Third Party Advisory, VDB Entry
• https://kb.parallels.com/en/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-435/Third Party Advisory, VDB Entry

Published

Apr 29, 2021

Last Modified

Jun 17, 2026

Status

Modified

• 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-2021-31421This vulnerability allows local attackers to delete arbitrar…6
• CVE-2021-31422This vulnerability allows local attackers to escalate privil…7.5
• CVE-2021-31423This vulnerability allows local attackers to disclose sensit…6
• CVE-2021-31424This vulnerability allows local attackers to escalate privil…8.8
• CVE-2021-31425This vulnerability allows local attackers to escalate privil…8.8
• CVE-2021-31426This vulnerability allows local attackers to escalate privil…8.8
• CVE-2021-31428This vulnerability allows local attackers to escalate privil…8.2
• CVE-2021-31429This vulnerability allows local attackers to escalate privil…8.2
• CVE-2021-31430This vulnerability allows local attackers to disclose sensit…6
• CVE-2021-31431This vulnerability allows local attackers to disclose sensit…6
• CVE-2021-31432This vulnerability allows local attackers to disclose sensit…6
• CVE-2021-31433This vulnerability allows remote attackers to execute arbitr…7.8