Security update for MozillaThunderbird SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2025:20021-1 Final 1 1 2025-10-29T17:54:20Z current 2025-10-29T17:54:20Z 2025-10-29T17:54:20Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for MozillaThunderbird This update for MozillaThunderbird fixes the following issues: Changes in MozillaThunderbird: Mozilla Thunderbird 140.3.0 ESR: * Right-clicking 'List-ID' -> 'Unsubscribe' created double encoded draft subject * Thunderbird could crash on startup * Thunderbird could crash when importing mail * Opening Website header link in RSS feed incorrectly re-encoded URL parameters MFSA 2025-78 (bsc#1249391) * CVE-2025-10527 Sandbox escape due to use-after-free in the Graphics: Canvas2D component * CVE-2025-10528 Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component * CVE-2025-10529 Same-origin policy bypass in the Layout component * CVE-2025-10532 Incorrect boundary conditions in the JavaScript: GC component * CVE-2025-10533 Integer overflow in the SVG component * CVE-2025-10536 Information disclosure in the Networking: Cache component * CVE-2025-10537 Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143 The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-Leap-16.0-packagehub-10 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1249391 SUSE Bug 1249391 https://www.suse.com/security/cve/CVE-2025-10527/ SUSE CVE CVE-2025-10527 page https://www.suse.com/security/cve/CVE-2025-10528/ SUSE CVE CVE-2025-10528 page https://www.suse.com/security/cve/CVE-2025-10529/ SUSE CVE CVE-2025-10529 page https://www.suse.com/security/cve/CVE-2025-10532/ SUSE CVE CVE-2025-10532 page https://www.suse.com/security/cve/CVE-2025-10533/ SUSE CVE CVE-2025-10533 page https://www.suse.com/security/cve/CVE-2025-10536/ SUSE CVE CVE-2025-10536 page https://www.suse.com/security/cve/CVE-2025-10537/ SUSE CVE CVE-2025-10537 page openSUSE Leap 16.0 MozillaThunderbird-140.3.0-bp160.1.1 MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 MozillaThunderbird-translations-common-140.3.0-bp160.1.1 MozillaThunderbird-translations-other-140.3.0-bp160.1.1 MozillaThunderbird-140.3.0-bp160.1.1 as a component of openSUSE Leap 16.0 MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 as a component of openSUSE Leap 16.0 MozillaThunderbird-translations-common-140.3.0-bp160.1.1 as a component of openSUSE Leap 16.0 MozillaThunderbird-translations-other-140.3.0-bp160.1.1 as a component of openSUSE Leap 16.0 Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10527 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10527.html CVE-2025-10527 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10528 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10528.html CVE-2025-10528 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Same-origin policy bypass in the Layout component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10529 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10529.html CVE-2025-10529 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Incorrect boundary conditions in the JavaScript: GC component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10532 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10532.html CVE-2025-10532 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Integer overflow in the SVG component. This vulnerability affects Firefox < 143, Firefox ESR < 115.28, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10533 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10533.html CVE-2025-10533 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Information disclosure in the Networking: Cache component. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10536 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10536.html CVE-2025-10536 https://bugzilla.suse.com/1249391 SUSE Bug 1249391 Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. CVE-2025-10537 openSUSE Leap 16.0:MozillaThunderbird-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-openpgp-librnp-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-common-140.3.0-bp160.1.1 openSUSE Leap 16.0:MozillaThunderbird-translations-other-140.3.0-bp160.1.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-10537.html CVE-2025-10537 https://bugzilla.suse.com/1249391 SUSE Bug 1249391