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CVE-2026-27856

Dovecot

Description

Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.

CVSS 7.4EPSS 0.392%Risk 0.77
View source
Published
2026-03-27 09:16:19
Affected versions
unknown
Type
Core software
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N