Description
Privilege escalation in the Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Scores
CVSS v3
8.8
EPSS
0.0004
EPSS Percentile
13.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-269
Status
published
Products (7)
mozilla/firefox
< 140.10.0
mozilla/firefox
< 150.0
Mozilla/Firefox
140.10 - 140.*
Mozilla/Firefox
150
mozilla/thunderbird
< 140.10.0
Mozilla/Thunderbird
140.10 - 140.*
Mozilla/Thunderbird
150
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026