Description (CNA)
ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Open-Xchange GmbH / OX Dovecot Pro | affected 0 through 3.1.0; affected 0 through 2.4.0 |
CWE
CWE-20
References
- https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json
ADP enrichment
No English description supplied.
No references supplied.
A flaw was found in ManageSieve. A remote attacker can exploit this vulnerability by sending a crafted SASL (Simple Authentication and Security Layer) initial response during the AUTHENTICATE command. This can cause the ManageSieve service to crash repeatedly, leading to a Denial of Service (DoS) for other users.
- https://access.redhat.com/security/cve/CVE-2025-59032
- https://bugzilla.redhat.com/show_bug.cgi?id=2452172
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59032.json
- https://access.redhat.com/errata/RHSA-2026:26564
- https://access.redhat.com/errata/RHSA-2026:17602
- https://access.redhat.com/errata/RHSA-2026:13498
- https://access.redhat.com/errata/RHSA-2026:19149
- https://access.redhat.com/errata/RHSA-2026:13830
- https://access.redhat.com/errata/RHSA-2026:19455
- https://access.redhat.com/errata/RHSA-2026:19453
- https://access.redhat.com/errata/RHSA-2026:18053
- https://access.redhat.com/errata/RHSA-2026:17630
- https://access.redhat.com/errata/RHSA-2026:17628
- https://access.redhat.com/errata/RHSA-2026:17625
- https://access.redhat.com/errata/RHSA-2026:17626
- https://access.redhat.com/errata/RHSA-2026:13857
- https://access.redhat.com/errata/RHSA-2026:19364