<div class="container">
<h1>Security update for strongswan</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:1637-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-04-27T16:59:38Z</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=1261705">bsc#1261705</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261706">bsc#1261706</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261708">bsc#1261708</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261712">bsc#1261712</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261717">bsc#1261717</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261718">bsc#1261718</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261720">bsc#1261720</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-2026-35328.html">CVE-2026-35328</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35329.html">CVE-2026-35329</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35330.html">CVE-2026-35330</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35331.html">CVE-2026-35331</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35332.html">CVE-2026-35332</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35333.html">CVE-2026-35333</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-35334.html">CVE-2026-35334</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-2026-35328</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-2026-35328</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-2026-35329</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-2026-35329</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-2026-35330</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">9.2</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-35330</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.1</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-35331</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-35331</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-35332</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-2026-35332</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-2026-35333</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-2026-35333</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-2026-35334</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-2026-35334</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>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">Basesystem Module 15-SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Workstation Extension 15 SP7</li>
<li class="list-group-item">SUSE Package Hub 15 15-SP7</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves seven vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for strongswan fixes the following issues:</p>
<ul>
<li>CVE-2026-35328: infinite loop when handling supported versions TLS extension (bsc#1261712).</li>
<li>CVE-2026-35329: null pointer dereference when processing padding in PKCS#7 (bsc#1261717).</li>
<li>CVE-2026-35330: integer underflow when handling EAP-SIM/AKA attributes (bsc#1261705).</li>
<li>CVE-2026-35331: accepting certificates violating name constraints (bsc#1261718).</li>
<li>CVE-2026-35332: null pointer dereference when handling ECDH public value in TLS (bsc#1261708).</li>
<li>CVE-2026-35333: integer underflow when handling RADIUS attributes (bsc#1261706).</li>
<li>CVE-2026-35334: possible null pointer dereference in RSA decryption (bsc#1261720).</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">
Basesystem Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1637=1</code>
</li>
<li class="list-group-item">
SUSE Package Hub 15 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-1637=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Workstation Extension 15 SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-1637=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
<ul>
<li>strongswan-libs0-5.9.14-150700.3.14.1</li>
<li>strongswan-ipsec-debuginfo-5.9.14-150700.3.14.1</li>
<li>strongswan-libs0-debuginfo-5.9.14-150700.3.14.1</li>
<li>strongswan-hmac-5.9.14-150700.3.14.1</li>
<li>strongswan-ipsec-5.9.14-150700.3.14.1</li>
<li>strongswan-5.9.14-150700.3.14.1</li>
<li>strongswan-debuginfo-5.9.14-150700.3.14.1</li>
<li>strongswan-debugsource-5.9.14-150700.3.14.1</li>
</ul>
</li>
<li>
Basesystem Module 15-SP7 (noarch)
<ul>
<li>strongswan-doc-5.9.14-150700.3.14.1</li>
</ul>
</li>
<li>
SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x x86_64)
<ul>
<li>strongswan-debuginfo-5.9.14-150700.3.14.1</li>
<li>strongswan-nm-5.9.14-150700.3.14.1</li>
<li>strongswan-debugsource-5.9.14-150700.3.14.1</li>
<li>strongswan-nm-debuginfo-5.9.14-150700.3.14.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
<ul>
<li>strongswan-debuginfo-5.9.14-150700.3.14.1</li>
<li>strongswan-nm-5.9.14-150700.3.14.1</li>
<li>strongswan-debugsource-5.9.14-150700.3.14.1</li>
<li>strongswan-nm-debuginfo-5.9.14-150700.3.14.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35328.html">https://www.suse.com/security/cve/CVE-2026-35328.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35329.html">https://www.suse.com/security/cve/CVE-2026-35329.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35330.html">https://www.suse.com/security/cve/CVE-2026-35330.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35331.html">https://www.suse.com/security/cve/CVE-2026-35331.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35332.html">https://www.suse.com/security/cve/CVE-2026-35332.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35333.html">https://www.suse.com/security/cve/CVE-2026-35333.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-35334.html">https://www.suse.com/security/cve/CVE-2026-35334.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261705">https://bugzilla.suse.com/show_bug.cgi?id=1261705</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261706">https://bugzilla.suse.com/show_bug.cgi?id=1261706</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261708">https://bugzilla.suse.com/show_bug.cgi?id=1261708</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261712">https://bugzilla.suse.com/show_bug.cgi?id=1261712</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261717">https://bugzilla.suse.com/show_bug.cgi?id=1261717</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261718">https://bugzilla.suse.com/show_bug.cgi?id=1261718</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261720">https://bugzilla.suse.com/show_bug.cgi?id=1261720</a>
</li>
</ul>
</div>