CVE-2026-3847

Memory safety bugs fixed in Firefox 148.0.2

High · published March 10, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
31.9
In the wild
Unconfirmed
What it is

Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00390 · 31.9th percentile
Published
2026-03-10T15:03Z
EPSS history
Timeline
  • 10 MAR 15:03Z
    Memory safety bugs fixed in Firefox 148.0.2
    cvelistv5