What’s Vulnerable › Vulnerabilities

CVE-2021-27278

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-22 · updated 2026-06-17
• Weakness: CWE-22

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.1-49141. 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 validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the current user on the host system. Was ZDI-CAN-12130.

Affected products

• Parallels Desktop: 16.1.1

References

• https://kb.parallels.com/en/125013
• https://www.zerodayinitiative.com/advisories/ZDI-21-412/
• https://kb.parallels.com/en/125013
• https://www.zerodayinitiative.com/advisories/ZDI-21-412/

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