Nundina › Discover calendars › CISA Known Exploited Vulnerabilities calendar › CVE-2026-73570 - Synacor Zimbra Collaboration Suite (ZCS)CVE-2026-73570 - Synacor Zimbra Collaboration Suite (ZCS)21 August 2026Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability. Zimbra Collaboration Suite (ZCS) contains an OS command injection vulnerability which could allow an unauthenticated attacker to send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD...CISA Known Exploited Vulnerabilities calendarMore from this calendar

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