VULNERABILITY INTELLIGENCE
CVE-2025-49710
CVSS score9.8 CRITICAL
EPSS probability0.74%
CISA KEVNot currently listed
Published2025-06-11
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-190
Primary references
- security@mozilla.org — Permissions Required
- security@mozilla.org — Vendor Advisory