SUSE-SU-2026:1641-1: important: Security update for dovecot22

SLE-UPDATES null at suse.de
Tue Apr 28 20:30:25 UTC 2026 


# Security update for dovecot22

Announcement ID: SUSE-SU-2026:1641-1  
Release Date: 2026-04-28T11:53:50Z  
Rating: important  
References:

  * bsc#1260895
  * bsc#1260897
  * bsc#1260898
  * bsc#1260899
  * bsc#1260900
  * bsc#1260901
  * bsc#1260902

  
Cross-References:

  * CVE-2025-59031
  * CVE-2025-59032
  * CVE-2026-27855
  * CVE-2026-27856
  * CVE-2026-27857
  * CVE-2026-27858
  * CVE-2026-27859

  
CVSS scores:

  * CVE-2025-59031 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-59031 ( SUSE ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  * CVE-2025-59031 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  * CVE-2025-59032 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-59032 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-59032 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27855 ( SUSE ):  7.6
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-27855 ( SUSE ):  6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-27855 ( NVD ):  6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-27856 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-27856 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-27856 ( NVD ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-27857 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-27857 ( SUSE ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-27857 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-27858 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-27858 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27858 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27859 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-27859 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-27859 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves seven vulnerabilities can now be installed.

## Description:

This update for dovecot22 fixes the following issues:

  * CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read
    unintended files during indexing (bsc#1260895).
  * CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a
    client (bsc#1260902).
  * CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).
  * CVE-2026-27856: Doveadm credentials were not checked using timing-safe
    checking function (bsc#1260899).
  * CVE-2026-27857: sending excessive parenthesis causes imap-login to use
    excessive memory (bsc#1260898).
  * CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of
    memory during authentication (bsc#1260901).
  * CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can
    excessive CPU usage (bsc#1260897).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-1641=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1641=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * dovecot22-backend-pgsql-debuginfo-2.2.31-19.32.1
    * dovecot22-debugsource-2.2.31-19.32.1
    * dovecot22-backend-sqlite-debuginfo-2.2.31-19.32.1
    * dovecot22-backend-mysql-debuginfo-2.2.31-19.32.1
    * dovecot22-backend-pgsql-2.2.31-19.32.1
    * dovecot22-debuginfo-2.2.31-19.32.1
    * dovecot22-2.2.31-19.32.1
    * dovecot22-devel-2.2.31-19.32.1
    * dovecot22-backend-sqlite-2.2.31-19.32.1
    * dovecot22-backend-mysql-2.2.31-19.32.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * dovecot22-backend-pgsql-debuginfo-2.2.31-19.32.1
    * dovecot22-debugsource-2.2.31-19.32.1
    * dovecot22-backend-sqlite-debuginfo-2.2.31-19.32.1
    * dovecot22-backend-mysql-debuginfo-2.2.31-19.32.1
    * dovecot22-backend-pgsql-2.2.31-19.32.1
    * dovecot22-debuginfo-2.2.31-19.32.1
    * dovecot22-2.2.31-19.32.1
    * dovecot22-devel-2.2.31-19.32.1
    * dovecot22-backend-sqlite-2.2.31-19.32.1
    * dovecot22-backend-mysql-2.2.31-19.32.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-59031.html
  * https://www.suse.com/security/cve/CVE-2025-59032.html
  * https://www.suse.com/security/cve/CVE-2026-27855.html
  * https://www.suse.com/security/cve/CVE-2026-27856.html
  * https://www.suse.com/security/cve/CVE-2026-27857.html
  * https://www.suse.com/security/cve/CVE-2026-27858.html
  * https://www.suse.com/security/cve/CVE-2026-27859.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260895
  * https://bugzilla.suse.com/show_bug.cgi?id=1260897
  * https://bugzilla.suse.com/show_bug.cgi?id=1260898
  * https://bugzilla.suse.com/show_bug.cgi?id=1260899
  * https://bugzilla.suse.com/show_bug.cgi?id=1260900
  * https://bugzilla.suse.com/show_bug.cgi?id=1260901
  * https://bugzilla.suse.com/show_bug.cgi?id=1260902

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