Hackers are exploiting a command injection vulnerability (CVE-2026-73570) in the Zimbra Collaboration Suite. This vulnerability allows attackers to compromise internet-facing email servers without any user interaction. Microsoft Threat Intelligence has observed attackers deploying webshells, escalating privileges, collecting authentication secrets, and staging mailbox data across organizations in various regions and industries. Zimbra Zero-Click Flaw The “zero-click” […]
The post Hackers Exploit Zimbra Zero-Click Flaw to Take Control of Email Servers appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.


