PT-2026-40025 · Dovecot+3 · Dovecot+3
CVE-2026-33603
·
Published
2026-05-12
·
Updated
2026-07-07
CVSS v3.1
6.8
Medium
| Vector | AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Dovecot versions prior to 2.4.4-1.1
Description
An attacker positioned between Dovecot and the client connection can use a specially crafted base64 exchange to fake SCRAM TLS channel binding. This allows the attacker to act as a MITM (Man-in-the-Middle) proxy and eavesdrop on communications between the client and the server.
Recommendations
Update to version 2.4.4-1.1.
Exploit
Fix
DoS
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Weakness Enumeration
Related Identifiers
Affected Products
Dovecot
Linuxmint
Red Os
Ubuntu