CVE-2025-59028
CVSS Score
5.3
EPSS Score
0.1%
EPSS Percentile
26th
When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.
| CWE | CWE-20 |
| Vendor | open-xchange gmbh |
| Product | ox dovecot pro |
| Published | Mar 27, 2026 |
| Last Updated | Mar 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
Open-Xchange GmbH / OX Dovecot Pro
0 ≤ 3.1.0 0 ≤ 2.4.0