CVE-2025-1013
MEDIUMCVSS 6.5/10EPSS 0.30%
Last modified
CVE-2025-1013 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. 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:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 128.7.0 |
| Mozilla | Firefox | < 135.0 |
| Mozilla | Thunderbird | < 128.7.0 |
| Mozilla | Thunderbird | >= 129.0, < 135.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1932555Issue Tracking
- 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-2025-1013?
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
How severe is CVE-2025-1013?
CVE-2025-1013 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2025-1013?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-1013?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST