# CVE-2026-33606

## Summary

- **CVE ID:** CVE-2026-33606
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N)
- **CWE:** CWE-93
- **Published:** Aug 28, 2026
- **Last Modified:** Aug 28, 2026

## Description

Mail content stored by a user can be crafted so that it is interpreted as dsync protocol commands when an administrator later runs dsync with the stream protocol, for example during a migration. Injected commands can modify mailbox state on the destination during migration or replication, including internal mailbox attributes that a user should not be able to set directly. It can also cause dsync errors. Avoid running dsync with the stream protocol on mailboxes with untrusted content. Update to non-vulnerable version. No publicly available exploits are known.

## Affected Products

- Open-Xchange GmbH — OX Dovecot Pro (2.3.0)
- Open-Xchange GmbH — OX Dovecot Pro (3.0.0)
- Open-Xchange GmbH — OX Dovecot Pro (3.1.0)
- Open-Xchange GmbH — OX Dovecot CE (2.3.0)

## References

- [CNA](https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 10.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._