CVE-2026-100760
Received Received - Intake

Firefox Sandbox Escape in Process Sandboxing

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-100760
EUVD
EUVD-2026-88912

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 153.4 (inc)
mozilla firefox to 157 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a sandbox escape vulnerability in Firefox's Security: Process Sandboxing component. It allows malicious code to break out of the isolated sandbox environment, potentially gaining unauthorized access to the host system.

Impact Analysis

If exploited, this vulnerability could allow attackers to run arbitrary code on your system with the same privileges as the Firefox process. This could lead to data theft, installation of malware, or further network compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update Firefox ESR to version 153.4 or Firefox to version 157 or later to address the sandbox escape vulnerability in the Security: Process Sandboxing component.

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