CVE-2026-92061

critical

Description

Incorrect boundary conditions in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

References

https://www.mozilla.org/security/advisories/mfsa2026-94/

https://www.mozilla.org/security/advisories/mfsa2026-90/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78524

https://bugzilla.mozilla.org/show_bug.cgi?id=2041758

Details

Source: Mitre, NVD

Published: 2026-09-15

Updated: 2026-10-05

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00551