CVE-2026-42392: Exposure of Sensitive Information to an Unauthorized Actor in Open-Xchange GmbH OX Dovecot Pro
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.
CVE-2026-42392: Exposure of Sensitive Information to an Unauthorized Actor in Open-Xchange GmbH OX Dovecot Pro
Description
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.
CVSS v3.1
Score 4.3medium
Affected software
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- OX
- Date Reserved
- 2026-04-27T08:53:58.839Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a916f8dacd9273b49cf924a
Added to database: 08/28/2026, 11:22:53 UTC
Last updated: 08/29/2026, 01:51:59 UTC
Views: 8
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