MiracleLinux 9 : dovecot-2.3.16-18.el9_8.8 (AXSA:2026-2051:08)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-2051:08 advisory. dovecot: Dovecot: Denial of Service via IMAP ID command with excessive parameters CVE-2026-42391 dovecot: Dovecot: Authentication bypass via incorre...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: dovecot (UTSA-2026-130073)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130073 advisory. 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...

Important: dovecot security update

Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Security Fixes: doveco...

Rocky Linux 10.2 [CIQ] Security Update: dovecot / dovecot-debuginfo / dovecot-debugsource / dovecot-devel / etc Multiple Vulnerabilities (crlsa-2026_79371)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202679371 advisory. dovecot: Dovecot: Denial of Service via IMAP ID command with excessive parameters CVE-2026-42391 dovecot: Dovecot: Authentication bypass via incorrect...

dovecot: Dovecot: Denial of Service via IMAP ID command with excessive parameters

A flaw was found in Dovecot. An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in. This action causes the server to consume excessive memory and CPU resources, leading to the termination of login processes and other active connections...

CVE-2026-42391

A flaw was found in Dovecot. An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in. This action causes the server to consume excessive memory and CPU resources, leading to the termination of login processes and other active connections...

SUSE 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...

Linux Distros Unpatched Vulnerability : CVE-2026-42391

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

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...

AZL-98262 CVE-2026-42391 affecting package dovecot 2.3.20-1

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...

ALPINE-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...

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,...

ImapEngine affected by command injection via the ID command parameters

Versions of the package directorytree/imapengine before 1.22.3 are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' via the id function in ImapConnection.php due to improperly escaping user input before including it in IMAP ID commands...