Description
A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed version where the processing is limited. No publicly available exploits are known.
Scores
CVSS v3
5.3
EPSS
0.0002
EPSS Percentile
5.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (3)
Open-Xchange GmbH/OX Dovecot Pro
< 2.4.0
Open-Xchange GmbH/OX Dovecot Pro
< 3.0.2
Open-Xchange GmbH/OX Dovecot Pro
< 3.1.0
Published
Mar 27, 2026
Tracked Since
Mar 27, 2026