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. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2016-10367. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

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.