Description
Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 136 and Thunderbird 136.
References (3)
Core 3
Core References
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1869650%2C1938451%2C1940326%2C1944052%2C1944063%2C1947281
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-14/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-17/
Scores
CVSS v3
8.2
EPSS
0.0036
EPSS Percentile
58.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-122
Status
published
Products (4)
mozilla/firefox
< 136.0
Mozilla/Firefox
136
mozilla/thunderbird
< 136.0
Mozilla/Thunderbird
136
Published
Mar 04, 2025
Tracked Since
Feb 18, 2026