Linux Distros Unpatched Vulnerability : CVE-2026-52687

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An attacker that has valid credentials can select a compression algorithm for the IMAP connection whose decompression state requires a large amount of memory, a...

CVE-2026-42391

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

CVE-2026-42391

Open-Xchange Dovecot is vulnerable to a denial-of-service attack in its imap-login process. An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before authentication, causing disproportionate memory and CPU consumption . The resulting out-of-memory termi...

CVE-2026-42391

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

PT-2026-83067

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.5-1.1 Description An unauthenticated attacker can send an IMAP ID command containing an excessive number of parameters before authentication. This action causes disproportionate growth in memory and CPU usage,...