Attackers Exploit Zimbra Flaw to Deploy Web Shells and Harvest Authentication Secrets
Threat actors have weaponized a now-patched security flaw in Zimbra Collaboration Suite (ZCS) to deploy web shells and access mailbox data, according to findings from the Microsoft Security Research team. The attack exploits CVE-2026-73570 (CVSS score: 8.9), an unauthenticated operating system command injection flaw that can lead to remote code execution when Simple Network Management Protocol
We haven't written up this one. The Hacker News has the full story — the link below goes straight to it.
