What’s Vulnerable › Vulnerabilities

CVE-2023-39107

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-04 · updated 2026-06-17
• Weakness: CWE-59

Description

An arbitrary file overwrite vulnerability in NoMachine Free Edition and Enterprise Client for macOS before v8.8.1 allows attackers to overwrite root-owned files by using hardlinks.

Affected products

• NoMachine: before 8.8.1 — fixed in 8.8.1

How to fix

Upgrade to a fixed version: NoMachine 8.8.1. Check the vendor advisory for mitigations.

References

• https://kb.nomachine.com/SU07U00247
• https://kb.nomachine.com/TR07U10948
• https://www.ns-echo.com/posts/nomachine_afo.html
• https://kb.nomachine.com/SU07U00247
• https://kb.nomachine.com/TR07U10948
• https://www.ns-echo.com/posts/nomachine_afo.html

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