VDB
CVE-2026-42392
CVE-2026-42392
PUBLISHED
CVSS 4.3 MEDIUM
Reported by OX · Published August 28, 2026
An attacker that has valid credentials can send an invalid IMAP URLFETCH command, which causes uninitialized memory to be included in the error response returned to the client. Process memory contents can be disclosed to the client, which may include sensitive data. Disable the IMAP URLAUTH functionality. Update to non-vulnerable 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:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Xchange GmbH | OX Dovecot Pro | 2.3.0 |
| Open-Xchange GmbH | OX Dovecot CE | 2.3.0 |
| Open-Xchange GmbH | OX Dovecot Pro | 2.3.0 |
| alpine | dovecot | 0, 0, 0 |
| Open-Xchange GmbH | OX Dovecot CE | 2.3.0 |
Timeline
- Aug 28, 2026 CVE Published
- Aug 29, 2026 EPSS Score
- Sep 2, 2026 Security Advisory
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
- Sep 29, 2026 EPSS Score
- Oct 1, 2026 EPSS Score
- Oct 6, 2026 EPSS Score