CVE-2026-92019
Received Received - Intake

Mitigation Bypass in Firefox Remote Settings Client

Vulnerability report for CVE-2026-92019, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Mozilla Corporation

Description

Mitigation bypass in the Remote Settings Client component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.

CVSS Scores

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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
EUVD

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox 156
mozilla firefox_esr 115.41
mozilla firefox_esr 140.16
mozilla firefox_esr 153.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

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Executive Summary

This is a mitigation bypass vulnerability in Firefox's Remote Settings Client component. It allows attackers to bypass security measures that were meant to protect against certain threats. The issue was patched in newer versions of Firefox and its ESR branches.

Impact Analysis

If exploited, this vulnerability could allow unauthorized access or control over affected systems. Users running vulnerable Firefox versions might face data breaches, malware infections, or other security risks. Updating to patched versions mitigates this risk.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions a mitigation bypass in the Remote Settings Client component without detailing potential compliance implications.

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 mitigation bypass in the Remote Settings Client component.

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