Description
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
References (5)
Scores
CVSS v3
9.8
EPSS
0.0002
EPSS Percentile
4.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-269
Status
published
Products (8)
mozilla/firefox
< 140.8.0
mozilla/firefox
< 148.0
Mozilla/Firefox
140.8 - 140.*
Mozilla/Firefox
148
mozilla/thunderbird
< 140.8.0
mozilla/thunderbird
< 148.0
Mozilla/Thunderbird
140.8 - 140.*
Mozilla/Thunderbird
148
Published
Feb 24, 2026
Tracked Since
Feb 24, 2026