Microsoft details active exploitation of Zimbra CVE-2026-73570 unauthenticated command injection granting root access, web shells, and theft of mailbox authentication secrets.
CISA added actively exploited Zimbra flaw CVE-2026-73570 (unauthenticated OS command injection RCE) to its KEV catalog, setting an August 24, 2026 federal patch deadline.
Entities are extracted by the model from each article. First seen , last mentioned . Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.
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