on-premises - DIESEC

Zimbra Command Injection Vulnerability Actively Exploited

By Editorial Team | August 26, 2026

A Zimbra command injection vulnerability is under active exploitation against on-premises mail servers; the CISA federal deadline already passed.

A Zimbra command injection vulnerability is under confirmed active exploitation against on-premises mail servers, and CISA’s federal remediation deadline of August 24 has already passed. Tracked as CVE-2026-73570, the flaw lets an unauthenticated attacker execute arbitrary shell commands on any unpatched Zimbra Collaboration Suite instance with SNMP notifications enabled — a configuration many administrators never…

CVE-2026-50522 SharePoint RCE: Patching Isn’t Enough

By Editorial Team | July 23, 2026

CVE-2026-50522 SharePoint RCE is now the third actively exploited remote code execution flaw hitting Microsoft’s on-premises collaboration platform in three weeks — and this one lets attackers steal cryptographic machine keys that remain valid long after the server is patched. If you run SharePoint Server 2016, 2019, or Subscription Edition on-premises, patching is no longer…