Opsview Monitor Pro - Path Traversal (CVE-2016-10367)

CVE-2016-10367 is a directory traversal vulnerability in Opsview Monitor Pro versions prior to several 5.x and 4.x releases, allowing unauthenticated attackers to access sensitive files on the server by exploiting a URL encoding bypass. This flaw could be leveraged to read arbitrary files, potentially exposing confidential information and aiding further attacks.

CrowdSec has been tracking this vulnerability and its exploits since 10th of September 2025.

Data from the CrowdSec community indicates that exploitation of CVE-2016-10367 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2016-10367 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2016-10367 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit this vulnerability by sending requests to URLs containing /monitoring/..%252f..%252f with multiple encoded directory traversal sequences to access sensitive files such as /etc/passwd.