<div class="container">
<h1>Security update for MozillaThunderbird</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2025:03309-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2025-09-23T14:30:39Z</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=1249391">bsc#1249391</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-2025-10527.html">CVE-2025-10527</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10528.html">CVE-2025-10528</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10529.html">CVE-2025-10529</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10532.html">CVE-2025-10532</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10533.html">CVE-2025-10533</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10536.html">CVE-2025-10536</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-10537.html">CVE-2025-10537</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-2025-10527</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.1</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10528</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10529</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10532</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10533</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">8.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10536</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.2</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-10537</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">8.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">openSUSE Leap 15.6</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6</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 SP6</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 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Workstation Extension 15 SP7</li>
<li class="list-group-item">SUSE Package Hub 15 15-SP6</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 MozillaThunderbird fixes the following issues:</p>
<p>Update to Mozilla Thunderbird 140.3 (bsc#1249391).</p>
<p>Security issues fixed:</p>
<ul>
<li>MFSA 2025-78</li>
<li>CVE-2025-10527: sandbox escape due to use-after-free in the Graphics: Canvas2D component.</li>
<li>CVE-2025-10528: sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component.</li>
<li>CVE-2025-10529: same-origin policy bypass in the Layout component.</li>
<li>CVE-2025-10532: incorrect boundary conditions in the JavaScript: GC component.</li>
<li>CVE-2025-10533: integer overflow in the SVG component.</li>
<li>CVE-2025-10536: information disclosure in the Networking: Cache component.</li>
<li>CVE-2025-10537: memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird
143.</li>
</ul>
<p>Other issues fixed:</p>
<ul>
<li>Right-clicking 'List-ID' -> 'Unsubscribe' created double encoded draft subject.</li>
<li>Thunderbird could crash on startup.</li>
<li>Thunderbird could crash when importing mail.</li>
<li>Opening Website header link in RSS feed incorrectly re-encoded URL parameters.</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">
openSUSE Leap 15.6
<br/>
<code>zypper in -t patch openSUSE-SLE-15.6-2025-3309=1</code>
</li>
<li class="list-group-item">
SUSE Package Hub 15 15-SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-3309=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-SP7-2025-3309=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Workstation Extension 15 SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Product-WE-15-SP6-2025-3309=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-SP7-2025-3309=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
<ul>
<li>MozillaThunderbird-debuginfo-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-debugsource-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-other-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-common-140.3.0-150200.8.239.1</li>
</ul>
</li>
<li>
SUSE Package Hub 15 15-SP6 (aarch64 ppc64le s390x)
<ul>
<li>MozillaThunderbird-debuginfo-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-debugsource-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-other-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-common-140.3.0-150200.8.239.1</li>
</ul>
</li>
<li>
SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
<ul>
<li>MozillaThunderbird-debuginfo-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-debugsource-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-other-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-common-140.3.0-150200.8.239.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Workstation Extension 15 SP6 (x86_64)
<ul>
<li>MozillaThunderbird-debuginfo-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-debugsource-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-other-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-common-140.3.0-150200.8.239.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
<ul>
<li>MozillaThunderbird-debuginfo-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-debugsource-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-other-140.3.0-150200.8.239.1</li>
<li>MozillaThunderbird-translations-common-140.3.0-150200.8.239.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10527.html">https://www.suse.com/security/cve/CVE-2025-10527.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10528.html">https://www.suse.com/security/cve/CVE-2025-10528.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10529.html">https://www.suse.com/security/cve/CVE-2025-10529.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10532.html">https://www.suse.com/security/cve/CVE-2025-10532.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10533.html">https://www.suse.com/security/cve/CVE-2025-10533.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10536.html">https://www.suse.com/security/cve/CVE-2025-10536.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-10537.html">https://www.suse.com/security/cve/CVE-2025-10537.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1249391">https://bugzilla.suse.com/show_bug.cgi?id=1249391</a>
</li>
</ul>
</div>