Unsafe reflection in ZoneMinder - #VU153356
Published: October 6, 2026
Vulnerability identifier: #VU153356
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-470
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary operating-system commands as the filter process.
The vulnerability exists due to unsafe reflection in ZM_Object::set(), invoked by the filterdebug modal, when processing request-supplied filter keys before authorization. A remote user can send a specially crafted GET request with fid=0 and filter[save] followed by filter[execute] to execute arbitrary operating-system commands as the filter process.
Exploitation requires a working zmfilter.pl and a matching event with Executed=0. An enabled account with Events=None and System=None is sufficient.
Affected software
ZoneMinder
Remediation
Install security update from vendor's website.
ZoneMinder - addressed in versions 1.38.5, 1.38.6