CVE-2022-34899

HIGH

Parallels Access - TOCTOU Race Condition

Title source: rule

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Access 6.5.4 (39316) Agent. An attacker must first obtain the ability to execute low-privileged code on the target host system in order to exploit this vulnerability. The specific flaw exists within the Parallels service. By creating a symbolic link, an attacker can abuse the service to execute a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-16134.

Scores

CVSS v3 7.8
EPSS 0.0008
EPSS Percentile 22.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-367
Status published

Affected Products (1)

parallels/parallels_access

Timeline

Published Jul 18, 2022
Tracked Since Feb 18, 2026