by Kastro CVE-2026-12297
Mozilla Firefox — Sandbox escape due to incorrect boundary conditions in the Networking component
Description · from the CVE record
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
Affected
ProductAffectedFixed inSource
Firefoxsee advisory115.37CNA
Thunderbirdsee advisory140.12CNA
Red Hat Enterprise Linux 10see advisory0:140.12.0-1.el10_2redhat-SADP
Red Hat Enterprise Linux 10see advisory0:140.12.0-1.el10_2redhat-SADP
Red Hat Enterprise Linux 10.0 Extended Update Supportsee advisory0:140.12.0-1.el10_0redhat-SADP
Red Hat Enterprise Linux 10.0 Extended Update Supportsee advisory0:140.12.0-1.el10_0redhat-SADP
Red Hat Enterprise Linux 7 Extended Lifecycle Supportsee advisory0:140.12.0-1.el7_9redhat-SADP
Red Hat Enterprise Linux 8see advisory0:140.12.0-1.el8_10redhat-SADP
Red Hat Enterprise Linux 8see advisory0:140.12.0-1.el8_10redhat-SADP
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportsee advisory0:140.12.0-1.el8_4redhat-SADP
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportsee advisory0:140.12.0-1.el8_4redhat-SADP
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onsee advisory0:140.12.0-1.el8_4redhat-SADP
Scores by source
CISA ADP9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
redhat-SADP (CNA)7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total