CVE-2023-43744

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-08 · updated 2026-06-17
Weakness: CWE-78

Description

An OS command injection vulnerability in Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 17.0.10 patch 17161 and 16.04 patch 16109 allows an administrator to execute arbitrary OS commands via a file name parameter in a patch application function. The Zultys MX Administrator client has a "Patch Manager" section that allows administrators to apply patches to the device. The user supplied filename for the patch file is passed to a shell script without validation. Including bash command substitution characters in a patch file name results in execution of the provided command.

Affected products

Zultys Mx-E Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10
Zultys Mx-Se Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10
Zultys Mx-Se Ii Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10
Zultys Mx-Virtual Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10
Zultys Mx250 Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10
Zultys Mx30 Firmware: before 16.0.4; from 17.0.6 before 17.0.10 — fixed in 16.0.4, 17.0.10

How to fix

Upgrade to a fixed version: Zultys Mx-E Firmware 16.0.4, 17.0.10; Zultys Mx-Se Firmware 16.0.4, 17.0.10; Zultys Mx-Se Ii Firmware 16.0.4, 17.0.10; Zultys Mx-Virtual Firmware 16.0.4, 17.0.10; Zultys Mx250 Firmware 16.0.4, 17.0.10; Zultys Mx30 Firmware 16.0.4, 17.0.10. Check the vendor advisory for mitigations.

References

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