CVE-2026-109712
Deferred Deferred - Pending Action

Sandbox Escape in Firefox Due to Uninitialized Memory

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Sandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109712
EUVD
EUVD-2026-98637

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox 158
mozilla firefox_esr 115.43
mozilla firefox_esr 153.5

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a sandbox escape caused by uninitialized memory in the Graphics component of Firefox. It allows an attacker to break out of the browser's sandbox and potentially execute arbitrary code on the host system.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain control over your system by escaping the browser sandbox. This could lead to data theft, malware installation, or further network compromise.

Mitigation Strategies

Update Firefox to version 158 or later, Firefox ESR to version 115.43 or later, or Firefox ESR to version 153.5 or later to patch the vulnerability.

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