CVE-2025-49710: Vulnerability in Mozilla Firefox
An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
AI Analysis
Technical Summary
An integer overflow vulnerability existed in the OrderedHashTable used by the JavaScript engine in Mozilla Firefox. This vulnerability could potentially lead to memory corruption or other severe impacts. Mozilla fixed this issue in Firefox version 139.0.4 as documented in their security advisory MFSA 2025-47. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this integer overflow could allow an attacker to cause memory corruption, potentially leading to arbitrary code execution, data disclosure, or denial of service. The CVSS score of 9.8 indicates critical severity with high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 139.0.4 or later to remediate this vulnerability. This is the official fix provided by Mozilla as per their security advisory MFSA 2025-47. No additional mitigations are indicated by the vendor.
CVE-2025-49710: Vulnerability in Mozilla Firefox
Description
An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer overflow vulnerability existed in the OrderedHashTable used by the JavaScript engine in Mozilla Firefox. This vulnerability could potentially lead to memory corruption or other severe impacts. Mozilla fixed this issue in Firefox version 139.0.4 as documented in their security advisory MFSA 2025-47. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this integer overflow could allow an attacker to cause memory corruption, potentially leading to arbitrary code execution, data disclosure, or denial of service. The CVSS score of 9.8 indicates critical severity with high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 139.0.4 or later to remediate this vulnerability. This is the official fix provided by Mozilla as per their security advisory MFSA 2025-47. No additional mitigations are indicated by the vendor.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-06-09T20:17:23.292Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2025-47/","vendor":"Mozilla"}]
Threat ID: 6849756223110031d40fa8c6
Added to database: 06/11/2025, 12:24:02 UTC
Last enriched: 07/30/2026, 01:01:22 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 94
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