ZoneMinder up to 1.36.39/1.38.1/1.39.1 Monitor Creation zmdc.pl qx Device os command injection

Summaryinfo

A vulnerability was found in ZoneMinder up to 1.36.39/1.38.1/1.39.1. It has been declared as very critical. The affected element is the function qx of the file zmdc.pl of the component Monitor Creation. Executing a manipulation of the argument Device can lead to os command injection. The identification of this vulnerability is CVE-2026-30971. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in ZoneMinder up to 1.36.39/1.38.1/1.39.1. It has been declared as very critical. This vulnerability affects the function qx of the file zmdc.pl of the component Monitor Creation. The manipulation of the argument Device with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

ZoneMinder is a free, open source closed-circuit television software application. Prior to 1.39.2, 1.38.2, and 1.36.40, ZoneMinder interpolates an unvalidated monitor Device field into shell commands in PHP and Perl control paths when an authenticated user with monitor-create or monitor-edit permission saves a Local monitor whose Device Path contains shell metacharacters and the monitor control or startup path runs. In this attack mechanism, the stored Device value reaches Perl qx() and backtick execution before zmdc.pl argument detainting, while separate PHP command paths use bypassable escapeshellcmd defenses. The attacker can execute arbitrary commands as the web server user. This vulnerability is fixed in 1.39.2, 1.38.2, and 1.36.40.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-30971 since 03/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/16/2026). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 1.36.40, 1.38.2 or 1.39.2 eliminates this vulnerability.

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Productinfo

Type

• Video Surveillance Software

Name

• ZoneMinder

Version

• 1.36.0
• 1.36.1
• 1.36.2
• 1.36.3
• 1.36.4
• 1.36.5
• 1.36.6
• 1.36.7
• 1.36.8
• 1.36.9
• 1.36.10
• 1.36.11
• 1.36.12
• 1.36.13
• 1.36.14
• 1.36.15
• 1.36.16
• 1.36.17
• 1.36.18
• 1.36.19
• 1.36.20
• 1.36.21
• 1.36.22
• 1.36.23
• 1.36.24
• 1.36.25
• 1.36.26
• 1.36.27
• 1.36.28
• 1.36.29
• 1.36.30
• 1.36.31
• 1.36.32
• 1.36.33
• 1.36.34
• 1.36.35
• 1.36.36
• 1.36.37
• 1.36.38
• 1.36.39
• 1.38.0
• 1.38.1
• 1.39.0
• 1.39.1

License

• open-source

Website

• Product: https://github.com/ZoneMinder/zoneminder/

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