CVE-2022-26562: Kopano Groupware Core

Critical severity, CVSS 9.8. EPSS: 2.2% chance of exploitation in the next 30 days.

An issue in provider/libserver/ECKrbAuth.cpp of Kopano Core <= v11.0.2.51 contains an issue which allows attackers to authenticate even if the user account or password is expired. It also exists in the predecessor Zarafa Collaboration Platform (ZCP) in provider/libserver/ECPamAuth.cpp of Zarafa >= 6.30 (introduced between 6.30.0 RC1e and 6.30.8 final).

Affected products

• Kopano Groupware Core: version 11.0.2.51 only

Published 2022-04-01. Last modified 2026-06-17.