CVE-2026-4722

Privilege escalation in the IPC component

High · published March 24, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

Privilege escalation in the IPC component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

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
0.00451 · 38.2th percentile
Published
2026-03-24T12:30Z
EPSS history
Timeline
  • 24 MAR 12:30Z
    Privilege escalation in the IPC component
    cvelistv5