The MOVEitISAPI service in Ipswitch MOVEit DMZ before 8.2 provides different error messages depending on whether a FileID exists, which allows remote authenticated users to enumerate FileIDs via the X-siLock-FileID parameter in a download action to MOVEitISAPI/MOVEitISAPI.dll.
Conclusion & alert: CVE-2015-7677 is rated Low Risk (18.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.03%).Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
Exploit prediction scoring system (EPSS) score for CVE-2015-7677
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).