This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-73209 →

DEBIAN-CVE-2026-73209

An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected...

Original description

The description as published by the source.

An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable 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