ALSA-2026:13857 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...

ALSA-2026:13830 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...

dovecot security update

1:2.3.21-16.1 - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161625 - fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command RHEL-162273 - fix CVE-2026-27857: denial of service via specially crafted NOOP...

Oracle Linux 10 : dovecot (ELSA-2026-13498)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-13498 advisory. - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161625 - fix CVE-2025-59032: ManageSieve: Denial of Service vi...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

Important: Red Hat Security Advisory: dovecot security update

An update for dovecot is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

dovecot: denial of service via specially crafted NOOP command

A flaw was found in dovecot. An unauthenticated and remote attacker can send a specially crafted "NOOP" command containing numerous open and close parentheses without a command-ending line feed, causing the server to allocate an excessive amount of memory, resulting in a denial of service...

RHEL 10 : dovecot (RHSA-2026:13498)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13498 advisory. Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3...

ALSA-2026:13498 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...

CLSA-2026-1777463708 dovecot: Fix of CVE-2017-15132

CVE-2017-15132: fix memory leak and hash-table use-after-free in authclientrequestabort lib-auth. Squashed upstream commits 1a29ed2f96da and a9b135760aea...

dovecot: Fix of CVE-2017-15132

CVE-2017-15132: fix memory leak and hash-table use-after-free in authclientrequestabort lib-auth. Squashed upstream commits 1a29ed2f96da and a9b135760aea...

SUSE SLES12 Security Update : dovecot22 (SUSE-SU-2026:1641-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1641-1 advisory. - CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing bsc1260895. - CVE-2025-59032:...

[SECURITY] [DSA 6197-3] dovecot regression update

------------------------------------------------------------------------- Debian Security Advisory DSA-6197-3 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso May 01, 2026 https://www.debian.org/security/faq -...

[SECURITY] [DLA 4556-1] dovecot security update

Debian LTS Advisory DLA-4556-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin May 01, 2026 https://wiki.debian.org/LTS Package : dovecot Version : 1:2.3.13+dfsg1-2+deb11u3 CVE ID : CVE-2025-59031 CVE-2025-59032 CVE-2026-0394 CVE-2026-27855 CVE-2026-27856...

Amazon Linux 2 : dovecot, --advisory ALAS2-2026-3252 (ALAS-2026-3252)

The version of dovecot installed on the remote host is prior to 2.2.36-6. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3252 advisory. Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can us...

Important: dovecot

Issue Overview: Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm ht...

CLSA-2026-1777463410 dovecot: Fix of CVE-2017-15132

CVE-2017-15132: fix memory leak and hash-table use-after-free in authclientrequestabort lib-auth. Squashed upstream commits 1a29ed2f96da and a9b135760aea...

USN-8136-2 dovecot regression

USN-8136-1 fixed vulnerabilities in Dovecot. The update caused a regression on Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An...

USN-8136-2: Dovecot regression

USN-8136-1 fixed vulnerabilities in Dovecot. The update caused a regression on Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An...

📄 Dovecot 3.1.0 Authentication Bypass / User Enumeration

This Metasploit auxiliary module targets an LDAP injection vulnerability in Dovecot mail servers that can lead to authentication bypass or user enumeration via IMAP/POP3. Version 3.1.0 is affected...