All vulnerabilities
CVE-2023-34192

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Synacor Zimbra Collaboration Suite (ZCS)Applications & CMS
Open in ThreatlineRecord JSON
CVSS
9.0Critical
ExploitationExploited in the wildAdded to KEV 25 Feb 2025CISA KEV
Exploit odds (EPSS)77.3%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline18 Mar 2025Remediation 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. 6 Jul 2023, 00:00 UTCPublishedCVE List
  2. 25 Feb 2025Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateZimbra Collaboration Suite (ZCS) v.8.8.15 - Cross-Site ScriptingNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability that allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 5