CVE-2026-2782

Privilege escalation in the Netmonitor component

High · published February 24, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
42.0
In the wild
Unconfirmed
What it is

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

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
0.00502 · 42.0th percentile
Published
2026-02-24T13:33Z
EPSS history
Timeline
  • 24 FEB 13:33Z
    Privilege escalation in the Netmonitor component
    cvelistv5