Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Thunderbird 154.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Mozilla Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
|
— |
154.0.0
|
|
Mozilla Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
|
— |
154.0
|
References 4
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022257%2C2027351%2C2027380%2C2…
security@mozilla.org
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2027388%2C2029750%2C2029794%2C2…
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-74/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-78/
security@mozilla.org