CVE-2026-74961
Undergoing Analysis Undergoing Analysis - In Progress

Side-channel Vulnerability in Firefox Web Audio Component

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Side-channel in the Web Audio component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-74961
EUVD
EUVD-2026-60685

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 153.1 (inc)

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 side-channel vulnerability in the Web Audio component of Firefox. Side-channel attacks exploit indirect information leaks, such as timing or power consumption, to infer sensitive data. The issue was addressed in Firefox 154 and Firefox ESR 153.1.

Detection Guidance

Detection requires checking Firefox version. Run 'firefox --version' or check 'about:support' in Firefox. Versions before 154 or ESR 153.1 are vulnerable.

Impact Analysis

An attacker could potentially exploit this flaw to gather sensitive information from your system, such as audio processing data or other side-channel leaks. This could lead to privacy breaches or unauthorized data access if combined with other vulnerabilities.

Mitigation Strategies

Update Firefox to version 154 or Firefox ESR to 153.1 or later. Disable Web Audio if updates are not immediately possible.

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