High severity8.8NVD Advisory· Published Sep 16, 2025· Updated Apr 13, 2026
CVE-2025-10537
CVE-2025-10537
Description
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 was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <143.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <140.3.0
- (no CPE)range: <=142 (Firefox) / <=140.2 (Firefox ESR)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <143.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.3.0
- (no CPE)range: <=142 (Thunderbird) / <=140.2 (Thunderbird ESR)
- osv-coords30 versionspkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP6pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 140.3.0-1.el9_6.alma.1+ 29 more
- (no CPE)range: < 140.3.0-1.el9_6.alma.1
- (no CPE)range: < 140.3.0-1.el9_6.alma.1
- (no CPE)range: < 140.3.0-1.el9_6.alma.1
- (no CPE)range: < 140.3.0-1.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.5.0-160000.1.1
- (no CPE)range: < 143.0-1.1
- (no CPE)range: < 140.3.0-150200.8.239.1
- (no CPE)range: < 140.3.0-bp160.1.1
- (no CPE)range: < 140.3.0-1.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.5.0-160000.1.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.3.0-150200.152.201.1
- (no CPE)range: < 140.5.0-160000.1.1
- (no CPE)range: < 140.3.0-150200.8.239.1
- (no CPE)range: < 140.3.0-150200.8.239.1
- (no CPE)range: < 140.3.0-150200.8.239.1
- (no CPE)range: < 140.3.0-150200.8.239.1
Patches
Vulnerability mechanics
References
7- www.mozilla.org/security/advisories/mfsa2025-73/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-75/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-77/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-78/nvdVendor Advisory
- bugzilla.mozilla.org/buglist.cginvdIssue Tracking
- lists.debian.org/debian-lts-announce/2025/09/msg00020.htmlnvd
- lists.debian.org/debian-lts-announce/2025/09/msg00026.htmlnvd
News mentions
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