CVE-2026-74957
Undergoing Analysis Undergoing Analysis - In Progress

Mitigation Bypass in Firefox Safe Browsing

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Mitigation bypass in the Safe Browsing component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, 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-2026-74957
EUVD
EUVD-2026-60757

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 140.14 (inc)
mozilla firefox_esr to 153.1 (inc)
mozilla firefox to 140.14 (inc)
mozilla firefox to 153.1 (inc)

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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 mitigation bypass vulnerability in Firefox's Safe Browsing component. It allows attackers to evade security protections designed to block malicious websites or downloads. The issue was patched in Firefox 154 and specific Firefox ESR versions.

Impact Analysis

If exploited, this vulnerability could allow malicious actors to bypass protections that prevent access to harmful websites or downloads. This increases the risk of malware infections, phishing attacks, or other cyber threats for users.

Compliance Impact

The provided CVE data does not specify how this vulnerability affects compliance with standards like GDPR or HIPAA. The description focuses on mitigation bypass in the Safe Browsing component without detailing regulatory impacts.

Mitigation Strategies

Update Firefox to version 154 or later, Firefox ESR to version 140.14 or later, or Firefox ESR to version 153.1 or later to apply the fixed Safe Browsing component.

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