Act
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Russian APT Exploited Zimbra Zero-Day to Steal Email and 2FA Codes
- Engineer — Act: If you run Zimbra webmail, patch to the latest release immediately — the exploit is zero-click (opening a message triggers it) and a joint NSA/CISA advisory confirms months of active state-actor abuse. Also review Zimbra access logs for bulk email-download activity over the past 90+ days.
- SOC/IR — Act: Pull the NSA/CISA joint advisory for published IOCs and hunt for bulk email exfiltration patterns and anomalous 2FA-recovery-code access in Zimbra webmail logs; the campaign ran for months, so extend your look-back window accordingly.
- Leader — Act: If Zimbra is in your webmail stack, confirm patch status with your engineering team this week and assess whether sensitive mailboxes were exposed; a joint NSA/CISA advisory on a months-long Russian espionage campaign stealing credentials and 2FA codes warrants a pre-emptive leadership brief before it surfaces in board news feeds.
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