CVE-2025-27915

Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability

Zimbra Collaboration Suite

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized…

12. Mär 2025

Ausgewertete Quellen

• Hinweis
  https://strikeready.com/blog/0day-ics-attack-in-the-wild/
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-27915
• CISA
  Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
• NVD
  CVE-2025-27915