Description
Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known.
Scores
CVSS v3
7.5
EPSS
0.0002
EPSS Percentile
6.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (3)
Open-Xchange GmbH/OX Dovecot Pro
< 2.3.0
Open-Xchange GmbH/OX Dovecot Pro
< 2.4.0
Open-Xchange GmbH/OX Dovecot Pro
< 3.1.0
Published
Mar 27, 2026
Tracked Since
Mar 27, 2026