Synacor (Zimbra Collaboration Suite (ZCS)) Data Breach

Synacor (Zimbra Collaboration Suite (ZCS)) experienced a data breach that was reported on October 7, 2025. Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user

Key Facts

Organization
Synacor (Zimbra Collaboration Suite (ZCS))
Date Reported
October 7, 2025
Incident Type
web app exploit
Industry
Technology
Severity Score
5/10
Confidence Level
high
Tags
web app exploit

Source

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Understanding web app exploit Incidents

Web application exploits target vulnerabilities in websites and APIs. Secure development practices, WAFs, and penetration testing protect against these attacks.