CVE-2026-109713
Received Received - Intake

Use-after-free in Firefox Crash Reporting

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Use-after-free in the Crash Reporting component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-19
AI Q&A
2026-10-13
EPSS Evaluated
2026-10-18
NVD
CVE-2026-109713
EUVD
EUVD-2026-98488

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 158 (inc)
mozilla firefox_esr to 153.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This is a use-after-free vulnerability in Firefox's Crash Reporting component. Use-after-free means the software tries to use memory after it has been freed, which can lead to crashes or arbitrary code execution. It was fixed in Firefox 158 and Firefox ESR 153.5.

Detection Guidance

This vulnerability is specific to Firefox and Thunderbird versions before 158 and ESR 153.5. Detection involves checking installed versions of these applications. Use commands like 'firefox --version' or 'thunderbird --version' to verify if your system is affected.

Impact Analysis

An attacker could exploit this to crash your browser or potentially run malicious code on your system. This could lead to data theft, system compromise, or further attacks depending on your environment.

Compliance Impact

This vulnerability does not directly specify impacts on compliance standards like GDPR or HIPAA. However, use-after-free vulnerabilities can potentially lead to unauthorized data access or system compromise, which may violate confidentiality requirements in GDPR or HIPAA if exploited.

Mitigation Strategies

Update Firefox to version 158 or later and Firefox ESR to version 153.5 or later to address the use-after-free vulnerability in the Crash Reporting component.

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