CVE-2026-92027
Received Received - Intake

Use-after-free in Firefox DOM Streams

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Mozilla Corporation

Description
Use-after-free in the DOM: Streams 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-2026-92027
EUVD
EUVD-2026-78490

Affected Vendors & Products

Showing 6 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

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 is a use-after-free vulnerability in the DOM: Streams component of Firefox browsers. It occurs when a program tries to use memory after it has been freed, potentially leading to crashes or arbitrary code execution.

Impact Analysis

An attacker could exploit this to crash your browser or run malicious code on your device. This may allow them to steal data, install malware, or take control of your system if you visit a specially crafted website.

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 Streams component.

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