High severity7.6NVD Advisory· Published Mar 4, 2025· Updated Apr 13, 2026
CVE-2025-1933
CVE-2025-1933
Description
On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
33cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <136.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <115.21.0
- (no CPE)range: <=115.21 and <=128.8
- (no CPE)range: <=136
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <128.8
- (no CPE)range: <=136 and <=128.8
- osv-coords27 versionspkg:apk/chainguard/firefoxpkg:apk/chainguard/firefox-esrpkg:apk/wolfi/firefoxpkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg: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
< 136-r0+ 26 more
- (no CPE)range: < 136-r0
- (no CPE)range: < 136-r0
- (no CPE)range: < 136-r0
- (no CPE)range: < 128.8.0-1.el9_5
- (no CPE)range: < 128.8.0-1.el9_5
- (no CPE)range: < 128.8.0-1.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 136.0-1.1
- (no CPE)range: < 128.8.0-150200.8.203.1
- (no CPE)range: < 128.8.0-1.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-112.249.3
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-150200.152.173.1
- (no CPE)range: < 128.8.0-112.249.3
- (no CPE)range: < 128.8.0-150200.8.203.1
- (no CPE)range: < 128.8.0-150200.8.203.1
Patches
Vulnerability mechanics
References
7- www.mozilla.org/security/advisories/mfsa2025-14/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-15/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-16/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-17/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-18/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue Tracking
- lists.debian.org/debian-lts-announce/2025/03/msg00006.htmlnvd
News mentions
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