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Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability

🗓️ 21 Aug 2026 00:00:00Reported by CISAType 
cisa_kev
 cisa_kev
🔗 www.cisa.gov👁 4 Views

Unauthenticated OS command injection in Zimbra via SMTP requests allows arbitrary command execution.

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21 Aug 2026 00:00Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.18.9
EPSS0.00539
SSVC
4