High severity8.1NVD Advisory· Published Apr 29, 2025· Updated Apr 13, 2026
CVE-2025-4093
CVE-2025-4093
Description
Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.10 and Thunderbird 128.10.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
25cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*+ 1 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <128.10
- (no CPE)range: <= 128.9
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*+ 1 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <128.10.0
- (no CPE)range: <= 128.9
- osv-coords21 versionspkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.6pkg: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%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%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/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6
< 128.10.0-1.el9_5.alma.1+ 20 more
- (no CPE)range: < 128.10.0-1.el9_5.alma.1
- (no CPE)range: < 128.10.0-1.el9_5.alma.1
- (no CPE)range: < 128.10.0-1.el9_5.alma.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.8.212.1
- (no CPE)range: < 128.10.0-1.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.152.179.1
- (no CPE)range: < 128.10.0-150200.8.212.1
- (no CPE)range: < 128.10.0-150200.8.212.1
Patches
Vulnerability mechanics
References
4- www.mozilla.org/security/advisories/mfsa2025-29/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-32/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
- lists.debian.org/debian-lts-announce/2025/05/msg00024.htmlnvd
News mentions
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