Fiche vulnérabilité
CVE-2026-2793 : faille critique mozilla firefox (CVSS 9.8)
Description
Memory safety bugs present in Firefox ESR 115.32, 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 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
En bref
- Sévérité
- Critique (CVSS 9.8)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 24 févr. 2026
- Dernière mise à jour
- 15 juil. 2026
Produits concernés
- mozilla firefox
- mozilla thunderbird
Références
- Fiche CVE-2026-2793 sur le NVD (NIST)
- bugzilla.mozilla.org/buglist.cgi
- mozilla.org/security/advisories/mfsa2026-13/
- mozilla.org/security/advisories/mfsa2026-14/
- mozilla.org/security/advisories/mfsa2026-15/
- mozilla.org/security/advisories/mfsa2026-16/
- mozilla.org/security/advisories/mfsa2026-17/
- access.redhat.com/errata/RHSA-2026:3338
- access.redhat.com/errata/RHSA-2026:3339
- access.redhat.com/errata/RHSA-2026:3361
- access.redhat.com/errata/RHSA-2026:3491
- access.redhat.com/errata/RHSA-2026:3492
- access.redhat.com/errata/RHSA-2026:3493
- access.redhat.com/errata/RHSA-2026:3494
- access.redhat.com/errata/RHSA-2026:3495
- access.redhat.com/errata/RHSA-2026:3496