Vulnerability in Open-Xchange Gmbh Ox Dovecot Ce
CVE-2026-73209
An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- security@open-xchange.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-73209?
- CVE-2026-73209 is a medium-severity vulnerability in Open-Xchange Gmbh Ox Dovecot Ce, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-08-28.
- How severe is CVE-2026-73209?
- Medium severity. CVSS v3 base score is 6.5 out of 10.