Description
Memory safety bugs present in Firefox 144 and Thunderbird 144. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 145 and Thunderbird 145.
References (3)
Core 3
Core References
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-87/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-90/
Scores
CVSS v3
8.1
EPSS
0.0005
EPSS Percentile
16.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
Status
published
Products (3)
mozilla/firefox
< 145.0
Mozilla/Firefox
145
Mozilla/Thunderbird
145
Published
Nov 11, 2025
Tracked Since
Feb 18, 2026