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Zimbra Zero-Day Exploit

Cyber Security News by CyberSum.net
Published on October 6, 2025 at 12:00 PM
3 sources
A zero-day exploit in Zimbra Collaboration Suite was used to target a military organization in a country, using malicious iCalendar files to deliver JavaScript payloads and steal sensitive data, including credentials, emails, and contacts, with the vulnerability now patched in versions 9.0.0 Patch 44, 10.0.13, and 10.1.5.

Sources

1
https://securityaffairs.com/183014/hacking/zimbra-users-targeted-in-zero-day-exploit-using-icalendar-attachments.html
2
https://www.bleepingcomputer.com/news/security/hackers-exploited-zimbra-flaw-as-zero-day-using-icalendar-files/
3
https://thehackernews.com/2025/10/zimbra-zero-day-exploited-to-target.html

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By Cyber Security News by CyberSum.netOctober 18, 2025 at 03:00 PM
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