CVE-2026-100760: Vulnerability in Mozilla Firefox
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
AI Analysis
Technical Summary
This vulnerability involves a sandbox escape in the Security: Process Sandboxing component of Mozilla Firefox, allowing potentially unauthorized code execution outside the sandbox environment. The issue was identified and fixed in Firefox ESR 153.4 and Firefox 157. The Mozilla advisory categorizes this vulnerability as high impact and includes references to the specific bug report (Bug 2058017).
Potential Impact
The vulnerability could allow an attacker to escape the sandbox protections in Firefox, potentially leading to execution of code with higher privileges than intended. This could undermine the security model of the browser's sandboxing mechanism. However, there are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 153.4 and Firefox 157. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
CVE-2026-100760: Vulnerability in Mozilla Firefox
Description
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Affected software
Mozilla
Firefox
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a sandbox escape in the Security: Process Sandboxing component of Mozilla Firefox, allowing potentially unauthorized code execution outside the sandbox environment. The issue was identified and fixed in Firefox ESR 153.4 and Firefox 157. The Mozilla advisory categorizes this vulnerability as high impact and includes references to the specific bug report (Bug 2058017).
Potential Impact
The vulnerability could allow an attacker to escape the sandbox protections in Firefox, potentially leading to execution of code with higher privileges than intended. This could undermine the security model of the browser's sandboxing mechanism. However, there are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 153.4 and Firefox 157. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-26T19:15:17.411Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","vendor":"Mozilla"}]
Threat ID: 6abbb3ebf7a7c5410664093e
Added to database: 09/29/2026, 12:49:47 UTC
Last enriched: 09/29/2026, 13:33:56 UTC
Last updated: 09/29/2026, 18:20:13 UTC
Views: 3
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