CVE-2025-1014
HIGHCVSS 8.8/10EPSS 0.36%
Last modified
CVE-2025-1014 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Certificate length was not properly checked when added to a certificate store. In practice only trusted data was processed. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
Certificate length was not properly checked when added to a certificate store. In practice only trusted data was processed. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 128.7.0 |
| Mozilla | Firefox | < 135.0 |
| Mozilla | Thunderbird | >= 128.0.1, < 128.7.0 |
| Mozilla | Thunderbird | >= 131.0, < 135.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1940804Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-07/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-09/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-10/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-11/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-1014?
Certificate length was not properly checked when added to a certificate store. In practice only trusted data was processed. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
How severe is CVE-2025-1014?
CVE-2025-1014 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2025-1014?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-1014?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST