Description
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Scores
CVSS v3
6.5
EPSS
0.0006
EPSS Percentile
17.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-693
Status
published
Products (7)
mozilla/firefox
< 140.10.0
mozilla/firefox
< 150.0
Mozilla/Firefox
140.10 - 140.*
Mozilla/Firefox
150
mozilla/thunderbird
140.0 - 140.10.0
Mozilla/Thunderbird
140.10 - 140.*
Mozilla/Thunderbird
150
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026