Description
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Scores
CVSS v3
9.8
EPSS
0.0002
EPSS Percentile
6.0%
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-416
Status
published
Products (5)
mozilla/firefox
< 149.0
Mozilla/Firefox
149
Mozilla/Firefox
unspecified - 149
Mozilla/Thunderbird
149
Mozilla/Thunderbird
unspecified - 149
Published
Mar 24, 2026
Tracked Since
Mar 24, 2026