Mozilla Firefox ESR < 140.9.1

Version 1.2

Apr 8, 2026, 12:40 PM

CVSS metrics ("CVSSv2 score" set to 10.0)
CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C")
CVSS metrics ("CVSSv3 score" set to 9.8)
CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H")
CVSSv2 score source (changed from "CVE-2026-5731" to "CVE-2026-5734")
CVSSv2 severity (based on CVE-2026-5734, severity increased from "Medium" to "High")