Russian state-backed hackers from APT28 are actively exploiting a high-severity stored cross-site scripting vulnerability (CVE-2025-66376) in the Zimbra Collaboration Suite (ZCS) to target Ukrainian government entities.…
8 articles · Updated March 19, 2026
Recent Intelligence Reports
Russian hackers exploit Zimbra flaw in Ukrainian govt attacks— Bleepingcomputer · March 19, 2026