CVE-2025-26842: Znuny

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Znuny through 7.1.3. If access to a ticket is not given, the content of S/MIME encrypted e-mail messages is visible to users with access to the CommunicationLog.

Affected products

• Znuny Znuny: up to and including 7.1.3

Published 2025-05-08. Last modified 2026-06-17.