CVE-2022-34899

Root code execution via symbolic-link race

Published Jul 18, 2022 · Updated Aug 3, 2024

Privilege escalation in Parallels Access Agent 6.5.4 (39316) allows local users to execute arbitrary code as root. A time-of-check/time-of-use race in the Parallels service lets an attacker-created symbolic link redirect the file that the service executes. Exploitation requires low-privileged code execution on the host and grants full root-context code execution.

CVSS severity7.0
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Parallels Access Agent 6.5.4 (39316) allows local users to execute arbitrary code as root. A time-of-check/time-of-use race in the Parallels service lets an attacker-created symbolic link redirect the file that the service executes. Exploitation requires low-privileged code execution on the host and grants full root-context code execution.

The record

CVE
CVE-2022-34899
Published
Jul 18, 2022
Updated
Aug 3, 2024
Vendor
Parallels
Product
Parallels Access
Classifications
CWE-367, T1574.010
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.5.4 (39316)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Parallels · Parallels Accessversion=6.5.4 (39316)

Published CVSS scores

7.0Zero Day InitiativeCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1574.010Services File Permissions Weakness

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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