CVE-2026-92028
Received Received - Intake

Use-after-free in Firefox DOM Core & HTML

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Mozilla Corporation

Description
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.

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Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-92028
EUVD
EUVD-2026-78491

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
mozilla firefox to 156 (inc)
mozilla firefox_esr to 115.41 (inc)
mozilla firefox_esr to 140.16 (inc)
mozilla firefox_esr to 153.3 (inc)
mozilla firefox 156
mozilla firefox_esr 140.16
mozilla firefox_esr 153.3

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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 use-after-free vulnerability in Firefox's DOM: Core & HTML component. Use-after-free occurs when a program continues to use a pointer after freeing the memory it points to, potentially leading to crashes or arbitrary code execution.

Detection Guidance

This vulnerability is a use-after-free in Firefox's DOM: Core & HTML component, fixed in Firefox 156 and Firefox ESR versions 115.41, 140.16, and 153.3. To detect it, check your Firefox version with 'firefox --version' or 'about:support' in Firefox. If your version is older than the patched releases, update immediately.

Impact Analysis

An attacker could exploit this to crash your browser or run malicious code on your system. This could lead to data theft, installation of malware, or unauthorized system access if combined with other vulnerabilities.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves a use-after-free issue in Firefox's DOM and HTML components, which could potentially lead to memory corruption and arbitrary code execution. Such issues may pose risks to data confidentiality and integrity, but explicit compliance implications are not detailed in the given context.

Mitigation Strategies

Update Firefox to version 156 or later, Firefox ESR to version 115.41 or later, Firefox ESR to version 140.16 or later, or Firefox ESR to version 153.3 or later to address the use-after-free vulnerability in the DOM: Core & HTML component.

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