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Threat Intelligence Report

Unauthenticated command injection on internet-facing mail servers: tracking CVE-2026-73570

๐Ÿ“… September 30, 2026 ๐Ÿ“ฐ www.microsoft.com ๐Ÿ” 1 CVE(s) referenced

Attackers exploited CVE-2026-73570 via crafted emails to unauthenticated, internet-facing Zimbra servers, gaining command execution that enabled web shells, root escalation, cluster-wide persistence, credential theft, and attempted mailbox exfiltration.

vendor
CVE-2026-73570

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