5.4 CVE-2025-27915

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVE ID Exploitable Vendor Product Vulnerability Date added
CVE-2025-27915 True Synacor Zimbra Collaboration Suite (ZCS) Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability 2025-10-07 00:00:00

Description

EUVD-2025-7823: 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 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 actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.


Recommendations

Not available in demo version.


External Refs:


AVET INS is an owner of VULNDBASE brand and website. This product uses data from the NVD API but is not endorsed or certified by the NVD. See NVD page for more information. CVE is a registered trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE site. CWE is a registered trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE page. KEV (Known Exploited Vulnerabilities) is a catalog maintained by CISA. EUVD is the official EU repository for timely, curated cybersecurity vulnerability intelligence and remediation guidance run by ENISA. DORA (Digital Operational Resilience Act) is and EU directive.

Copyright AVET INS 1997 - 2026