<div class="container">
<h1>Security update for dovecot22</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:2645-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-06-26T09:00:45Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>important</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265147">bsc#1265147</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265149">bsc#1265149</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265150">bsc#1265150</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>
Cross-References:
</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-33603.html">CVE-2026-33603</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-40020.html">CVE-2026-40020</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-42006.html">CVE-2026-42006</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>CVSS scores:</th>
<td>
<ul class="list-group">
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33603</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.6</span>
<span class="cvss-vector">CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33603</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33603</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33603</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40020</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40020</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40020</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">3.1</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40020</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42006</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.7</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42006</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42006</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 12 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server 12 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server 12 SP5 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 12 SP5</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves three vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for dovecot22 fixes the following issues</p>
<ul>
<li>CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection (bsc#1265147).</li>
<li>CVE-2026-40020: IMAP folders can be shared-spammed to everyone (bsc#1265149).</li>
<li>CVE-2026-42006: imap-login: uncontrolled memory usage with excessive bracing over IMAP (bsc#1265150).</li>
</ul>
<h2>Patch Instructions:</h2>
<p>
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".<br/>
Alternatively you can run the command listed for your product:
</p>
<ul class="list-group">
<li class="list-group-item">
SUSE Linux Enterprise Server 12 SP5 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2645=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
<br/>
<code>zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2645=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>dovecot22-backend-sqlite-2.2.31-19.37.2</li>
<li>dovecot22-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-devel-2.2.31-19.37.2</li>
<li>dovecot22-2.2.31-19.37.2</li>
<li>dovecot22-backend-pgsql-2.2.31-19.37.2</li>
<li>dovecot22-backend-mysql-2.2.31-19.37.2</li>
<li>dovecot22-backend-pgsql-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-debugsource-2.2.31-19.37.2</li>
<li>dovecot22-backend-sqlite-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-backend-mysql-debuginfo-2.2.31-19.37.2</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
<ul>
<li>dovecot22-backend-sqlite-2.2.31-19.37.2</li>
<li>dovecot22-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-devel-2.2.31-19.37.2</li>
<li>dovecot22-2.2.31-19.37.2</li>
<li>dovecot22-backend-pgsql-2.2.31-19.37.2</li>
<li>dovecot22-backend-mysql-2.2.31-19.37.2</li>
<li>dovecot22-backend-pgsql-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-debugsource-2.2.31-19.37.2</li>
<li>dovecot22-backend-sqlite-debuginfo-2.2.31-19.37.2</li>
<li>dovecot22-backend-mysql-debuginfo-2.2.31-19.37.2</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-33603.html">https://www.suse.com/security/cve/CVE-2026-33603.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40020.html">https://www.suse.com/security/cve/CVE-2026-40020.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-42006.html">https://www.suse.com/security/cve/CVE-2026-42006.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265147">https://bugzilla.suse.com/show_bug.cgi?id=1265147</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265149">https://bugzilla.suse.com/show_bug.cgi?id=1265149</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265150">https://bugzilla.suse.com/show_bug.cgi?id=1265150</a>
</li>
</ul>
</div>