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CVE-2024-4163: Privilege Escalation on Skylab IIoT Gateway (IGX)

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-26 · updated 2026-06-17
• Weakness: CWE-862

Description

The Skylab IGX IIoT Gateway allowed users to connect to it via a limited shell terminal (IGX). However, it was discovered that the process was running under root privileges. This allowed the attacker to read, write, and modify any file in the operating system by utilizing the limited shell file exec and download functions. By replacing the /etc/passwd file with a new root user entry, the attacker was able to breakout from the limited shell and login to a unrestricted shell with root access. With the root access, the attacker will be able take full control of the IIoT Gateway.

Affected products

• Skylab Igx Iiot Gateway: 1.2.12

References

• https://govtech-csg.github.io/security-advisories/2024/04/25/CVE-2024-4163.html
• https://govtech-csg.github.io/security-advisories/2024/04/25/CVE-2024-4163.html

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