In Opsview Monitor Pro (Prior to 5.1.0.162300841 prior to 5.0.2.27475 prior to 4.6.4.162391051 and 4.5.x without a certain 2016 security patch) an unauthenticated Directory Traversal vulnerability can be exploited by issuing a specially crafted HTTP GET request utilizing a simple URL encoding bypass %252f instead of /.