Critical severity9.8NVD Advisory· Published Feb 24, 2026· Updated Jul 15, 2026
CVE-2026-2792
CVE-2026-2792
Description
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
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: <148.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <140.8.0
- (no CPE)range: <=140.7
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <148.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.8.0
- (no CPE)range: <=140.7
- 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/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/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg: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%20SP7pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-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%2015%20SP6-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg: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%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%20SP7
< 140.8.0-r0+ 27 more
- (no CPE)range: < 140.8.0-r0
- (no CPE)range: < 140.8.0-r0
- (no CPE)range: < 140.8.0-r0
- (no CPE)range: < 140.8.0-2.el8_10.alma.1
- (no CPE)range: < 140.8.0-2.el9_7.alma.1
- (no CPE)range: < 140.8.0-1.el8_10.alma.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-160000.1.1
- (no CPE)range: < 148.0-1.1
- (no CPE)range: < 140.8.0-150200.8.260.1
- (no CPE)range: < 140.8.1-bp160.1.1
- (no CPE)range: < 140.8.0-1.1
- (no CPE)range: < 140.8.0-1.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-112.301.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-112.301.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.152.222.1
- (no CPE)range: < 140.8.0-150200.8.260.1
- (no CPE)range: < 140.8.0-150200.8.260.1
Patches
Vulnerability mechanics
References
33- www.mozilla.org/security/advisories/mfsa2026-13/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-15/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-16/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-17/nvdVendor Advisory
- bugzilla.mozilla.org/buglist.cginvdBroken Link
- access.redhat.com/errata/RHSA-2026:3338nvd
- access.redhat.com/errata/RHSA-2026:3339nvd
- access.redhat.com/errata/RHSA-2026:3361nvd
- access.redhat.com/errata/RHSA-2026:3491nvd
- access.redhat.com/errata/RHSA-2026:3492nvd
- access.redhat.com/errata/RHSA-2026:3493nvd
- access.redhat.com/errata/RHSA-2026:3494nvd
- access.redhat.com/errata/RHSA-2026:3495nvd
- access.redhat.com/errata/RHSA-2026:3496nvd
- access.redhat.com/errata/RHSA-2026:3497nvd
- access.redhat.com/errata/RHSA-2026:3515nvd
- access.redhat.com/errata/RHSA-2026:3516nvd
- access.redhat.com/errata/RHSA-2026:3517nvd
- access.redhat.com/errata/RHSA-2026:3976nvd
- access.redhat.com/errata/RHSA-2026:3978nvd
- access.redhat.com/errata/RHSA-2026:3979nvd
- access.redhat.com/errata/RHSA-2026:3980nvd
- access.redhat.com/errata/RHSA-2026:3981nvd
- access.redhat.com/errata/RHSA-2026:3982nvd
- access.redhat.com/errata/RHSA-2026:3983nvd
- access.redhat.com/errata/RHSA-2026:3984nvd
- access.redhat.com/errata/RHSA-2026:4022nvd
- access.redhat.com/errata/RHSA-2026:4152nvd
- access.redhat.com/errata/RHSA-2026:4260nvd
- access.redhat.com/errata/RHSA-2026:4432nvd
- access.redhat.com/security/cve/CVE-2026-2792nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2792.jsonnvd
News mentions
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