Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: dovecot (UTSA-2026-130077)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130077 advisory. When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in...

dovecot: Dovecot: Denial of Service and potential message duplication via connection limit exhaustion

A flaw was found in the Dovecot mail server's submission-login component. This vulnerability occurs when the server reaches its maximum allowed user IP connections, leading to a crash due to file descriptor handling issues. This can result in a denial of service, preventing users from sending...

dovecot: Dovecot: Denial of Service and potential message duplication via connection limit exhaustion

A flaw was found in the Dovecot mail server's submission-login component. This vulnerability occurs when the server reaches its maximum allowed user IP connections, leading to a crash due to file descriptor handling issues. This can result in a denial of service, preventing users from sending...

dovecot: Dovecot: Denial of Service and potential message duplication via connection limit exhaustion

A flaw was found in the Dovecot mail server's submission-login component. This vulnerability occurs when the server reaches its maximum allowed user IP connections, leading to a crash due to file descriptor handling issues. This can result in a denial of service, preventing users from sending...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: dovecot (UTSA-2026-090119)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-090119 advisory. In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a...

CVE-2026-33263

A flaw was found in the Dovecot mail server's submission-login component. This vulnerability occurs when the server reaches its maximum allowed user IP connections, leading to a crash due to file descriptor handling issues. This can result in a denial of service, preventing users from sending...

SUSE CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

Linux Distros Unpatched Vulnerability : CVE-2026-33263

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running i...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

AZL-98313 CVE-2026-33263 affecting package dovecot 2.3.20-1

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

ALPINE-CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

This vulnerability affects the submission-login process in OX Dovecot. When the mail_max_userip_connections limit (default 10) is reached, an epoll() panic triggered by file descriptor handling issues can crash the process. In high-security mode (default for community releases), only the new conn...

EUVD-2026-67658

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

CVE-2026-33263: Exposure of File Descriptor to Unintended Control Sphere

When mailmaxuseripconnections is set default 10 and reached, submission-login can crash with epoll panic caused by file descriptor handling issues. If running in high-security mode default for community releases, only the new submission connection gets terminated. If running in high-performance...

PT-2026-83051

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.5-1.1 Description A crash can occur in the submission-login process when the mail max userip connections limit is reached, resulting in an epoll panic due to file descriptor handling issues. In high-security mode,...