VDB
CVE-2026-33607
CVE-2026-33607
PUBLISHED
CVSS 4.3 MEDIUM
Reported by OX · Published August 28, 2026
An attacker that has valid credentials can use IMAP LIST command to consume CPU. This can cause degradation or denial of service for IMAP. Monitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed version. No publicly available exploits are known.
Risk Scores
CVSS 3.1
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Xchange GmbH | OX Dovecot Pro | 2.3.0, 3.1.0 |
| Open-Xchange GmbH | OX Dovecot CE | 2.3.0 |
| alpine | dovecot | 0, 0, 0 |
| Open-Xchange GmbH | OX Dovecot Pro | 2.3.0, 3.1.0 |
| Open-Xchange GmbH | OX Dovecot CE | 2.3.0 |
Timeline
- Aug 28, 2026 CVE Published
- Aug 28, 2026 Coalition ESS Score
- Aug 29, 2026 EPSS Score
- Sep 2, 2026 Security Advisory
- Sep 5, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
- Sep 29, 2026 EPSS Score