High severity7.5NVD Advisory· Published Mar 27, 2026· Updated Apr 30, 2026

CVE-2025-59032

Description

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 products

Dovecot (software)/Dovecot
cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
Range: <2.4.3
Open-Xchange/Dovecot
cpe:2.3:a:open-xchange:dovecot:*:*:*:*:pro:*:*:*
Range: <3.1.3

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.jsonnvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000