CVE-2019-8426 in ZoneMinder
Summary
by MITRE
skins/classic/views/controlcap.php in ZoneMinder before 1.32.3 has XSS via the newControl array, as demonstrated by the newControl[MinTiltRange] parameter.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/18/2025
The vulnerability identified as CVE-2019-8426 represents a cross-site scripting flaw within ZoneMinder's classic skin interface, specifically in the controlcap.php file. This issue affects versions prior to 1.32.3 and demonstrates how insufficient input validation can create persistent security weaknesses in surveillance management systems. The vulnerability manifests through the newControl array parameter, particularly the newControl[MinTiltRange] field, which fails to properly sanitize user-supplied data before rendering it within the web interface.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a critical weakness in web application security. The flaw operates by allowing malicious actors to inject arbitrary JavaScript code through the MinTiltRange parameter, which is then executed in the context of other users' browsers who view the affected page. The attack vector is particularly concerning in surveillance environments where ZoneMinder is used, as it could enable attackers to compromise the integrity of security monitoring systems. The vulnerability is categorized as a reflected XSS issue since the malicious input is processed and then reflected back to users in the web interface.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged to perform session hijacking, steal administrative credentials, or manipulate surveillance configurations. In a security context, this creates a significant risk for organizations relying on ZoneMinder for video surveillance and access control. The vulnerability affects the classic skin interface, which is a legacy component that may still be in use within organizations that have not upgraded to newer versions. Attackers could exploit this vulnerability to inject malicious scripts that could redirect users to phishing sites or execute commands on behalf of the authenticated user.
From an ATT&CK framework perspective, this vulnerability maps to T1566.001 (Phishing: Spearphishing Attachment) and T1566.002 (Phishing: Spearphishing Link) as attackers could craft malicious payloads targeting the surveillance interface. The vulnerability also relates to T1071.004 (Application Layer Protocol: DNS) and T1071.001 (Application Layer Protocol: Web Protocols) when attackers attempt to establish command and control channels through the compromised interface. Organizations using ZoneMinder in critical infrastructure environments face particular risk as this vulnerability could be exploited to gain unauthorized access to security monitoring systems, potentially allowing attackers to manipulate video feeds or disable security controls.
The recommended mitigation strategy involves immediate upgrading to ZoneMinder version 1.32.3 or later, which contains the necessary patches to address the input validation shortcomings. Additionally, implementing proper input sanitization measures, including the use of HTML entity encoding for all user-supplied parameters, should be enforced at the application level. Network segmentation and access controls should be implemented to limit exposure of the surveillance management interface to trusted users only. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within other components of the surveillance infrastructure. Organizations should also consider implementing web application firewalls to provide an additional layer of protection against similar cross-site scripting attacks targeting the ZoneMinder interface.