Incorrect boundary conditions in the Safe Browsing component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required
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
mozilla:firefox
mozilla:thunderbird
References 5
https://bugzilla.mozilla.org/show_bug.cgi?id=2061257
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-90/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-93/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-94/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-96/
security@mozilla.org