CVE-2025-3032
HIGHCVSS 7.4/10EPSS 0.35%
Last modified
CVE-2025-3032 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 137.0 |
| Mozilla | Thunderbird | < 137.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1949987Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-23/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-3032?
Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.
How severe is CVE-2025-3032?
CVE-2025-3032 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.
How do I fix CVE-2025-3032?
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-2025-3032?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST