This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-33607 →

DEBIAN-CVE-2026-33607

An attacker that has valid credentials can use IMAP LIST command to consume CPU. This can cause degradation or denial of service for IMAP. Monitor sys...

Original description

The description as published by the source.

An attacker that has valid credentials can use IMAP LIST command to consume CPU. This can cause degradation or denial of service for IMAP. Monitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed version. No publicly available exploits are known.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 dovecot

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 dovecot

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.1+dfsg1-6+deb13u7"}]}]

Debian:14 dovecot

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.4.5+dfsg1-1"}]}]

References

advisory security-tracker.debian.org