CVE-2015-4655: Cross-site scripting (XSS) vulnerability in Synology DiskStation Manager (DSM) before 5.2-5565 Update 1 all...

Security readout for executives and security teams

This flaw lets a remote attacker inject script or HTML into Synology DSM web pages through a vulnerable request parameter. In business terms, a user or administrator who follows a crafted link could have their browser run attacker-controlled content inside the DSM context. Exposure is limited to Synology DSM instances running versions before 5.2-5565 Update 1. Risk is higher where DSM web interfaces are reachable by untrusted users or administrators can be lured to attacker-controlled links. Prioritize remediation for internet-reachable or administrator-facing DSM systems, but do not treat this as confirmed mass exploitation based on the provided sources. The main business risk is browser-side compromise of DSM users through crafted links. Mitigation focus: Upgrade DSM to 5.2-5565 Update 1 or later where applicable.; Check Synology release notes for the exact model and supported DSM update path.; Limit DSM web interface access while upgrade status is being confirmed..

Prepared

Jun 13, 2026, 22:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.