CVE-2026-109708: Vulnerability in Mozilla Firefox
Description
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves incorrect boundary conditions in the Networking component of Mozilla Firefox, which leads to a sandbox escape. The sandbox is a security mechanism designed to isolate processes and limit the impact of exploits. By escaping the sandbox, an attacker could potentially execute code with higher privileges or access restricted resources. Mozilla addressed this vulnerability by releasing fixes in Firefox 158 and Firefox ESR 153.5.
Potential Impact
Successful exploitation could allow an attacker to escape the sandbox environment in Firefox, potentially leading to execution of arbitrary code outside the sandbox restrictions. This could increase the attack surface and risk of compromise on affected systems. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Users should update Mozilla Firefox to version 158 or later, or Firefox ESR 153.5 or later, to apply the official fix. No additional mitigation steps are required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:17.366Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c402cdf04f65661caf5
Added to database: 10/13/2026, 13:04:00 UTC
Last enriched: 10/13/2026, 14:19:37 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 2
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