CVE-2023-26035: ZoneMinder vulnerable to Missing Authorization

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 80.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-25 · updated 2026-06-17
Weakness: CWE-862

Description

ZoneMinder is a free, open source Closed-circuit television software application for Linux which supports IP, USB and Analog cameras. Versions prior to 1.36.33 and 1.37.33 are vulnerable to Unauthenticated Remote Code Execution via Missing Authorization. There are no permissions check on the snapshot action, which expects an id to fetch an existing monitor but can be passed an object to create a new one instead. TriggerOn ends up calling shell_exec using the supplied Id. This issue is fixed in This issue is fixed in versions 1.36.33 and 1.37.33.

Affected products

zoneminder: before 1.36.33; from 1.37.00 before 1.37.33 — fixed in 1.36.33, 1.37.33

How to fix

Upgrade to a fixed version: zoneminder 1.36.33, 1.37.33. Check the vendor advisory for mitigations.

References

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