Vulnerability Description
Memory safety bugs present in Firefox 136 and Thunderbird 136. 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 137 and Thunderbird 137.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 137.0 |
| Mozilla | Thunderbird | < 137.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1894100%2C1934086%2C1950360Broken LinkIssue Tracking
- https://www.mozilla.org/security/advisories/mfsa2025-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-23/Vendor Advisory
FAQ
What is CVE-2025-3034?
CVE-2025-3034 is a vulnerability with a CVSS score of 8.1 (HIGH). Memory safety bugs present in Firefox 136 and Thunderbird 136. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to...
How severe is CVE-2025-3034?
CVE-2025-3034 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-3034?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird.