All vulnerabilities
CVE-2025-48700

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

Synacor Zimbra Collaboration Suite (ZCS)Applications & CMS
Open in ThreatlineRecord JSON
CVSS
6.1Medium
ExploitationExploited in the wildAdded to KEV 20 Apr 2026CISA KEV
Exploit odds (EPSS)1.71%Chance of exploitation activity in the next 30 days, higher than 77% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline23 Apr 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 23 Jun 2025, 00:00 UTCPublishedCVE List
  2. 20 Apr 2026Added to CISA KEVCISA KEV

Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 5