VULNERABILITY INTELLIGENCE

CVE-2025-48700

CVSS score6.1 MEDIUM
EPSS probability1.71%
CISA KEVKnown exploited vulnerability
Published2025-06-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Known Exploited Vulnerability

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

Vendor / product: Synacor / Zimbra Collaboration Suite (ZCS)

Description

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. This issue arises from insufficient sanitization of HTML content, specifically involving crafted tag structures and attribute values that include an @import directive and other script injection vectors. The vulnerability is triggered when a user views a crafted e-mail message in the Classic UI, requiring no additional user interaction.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79

Primary references