High severity7.5NVD Advisory· Published Feb 4, 2025· Updated Apr 13, 2026
CVE-2025-1012
CVE-2025-1012
Description
A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
34cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <135.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <115.20.0
- (no CPE)range: <135
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <135.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: >=128.0.1,<128.7.0
- (no CPE)range: <135
- osv-coords28 versionspkg:apk/chainguard/firefoxpkg:apk/chainguard/firefox-esrpkg:apk/wolfi/firefoxpkg: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%20Tumbleweedpkg: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%2012%20SP5-LTSSpkg: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/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%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
< 135.0-r0+ 27 more
- (no CPE)range: < 135.0-r0
- (no CPE)range: < 128.7.0-r0
- (no CPE)range: < 135.0-r0
- (no CPE)range: < 128.7.0-1.el9_5
- (no CPE)range: < 128.7.0-1.el9_5
- (no CPE)range: < 128.7.0-1.el9_5.alma.1
- (no CPE)range: < 128.7.0-1.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 135.0-1.1
- (no CPE)range: < 128.7.0-150200.8.200.1
- (no CPE)range: < 128.7.0-1.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-112.246.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-150200.152.170.1
- (no CPE)range: < 128.7.0-112.246.1
- (no CPE)range: < 128.7.0-150200.8.200.1
- (no CPE)range: < 128.7.0-150200.8.200.1
Patches
Vulnerability mechanics
References
8- www.mozilla.org/security/advisories/mfsa2025-07/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-08/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-09/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-10/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-11/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
- lists.debian.org/debian-lts-announce/2025/02/msg00005.htmlnvd
- lists.debian.org/debian-lts-announce/2025/02/msg00006.htmlnvd
News mentions
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