Fiche vulnérabilité
CVE-2026-33603 : faille moyenne dovecot dovecot (CVSS 5.3)
Description
Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.
En bref
- Sévérité
- Moyenne (CVSS 5.3)
- Vecteur CVSS
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 12 mai 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- dovecot dovecot
- open-xchange dovecot