CVE-2026-109775
Deferred Deferred - Pending Action

Denial-of-Service in Firefox WebRTC Component

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Denial-of-service in the WebRTC component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109775
EUVD
EUVD-2026-98535

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 158 (inc)
mozilla firefox_esr to 153.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

This is a denial-of-service vulnerability in the WebRTC component of Firefox and Firefox ESR. It was patched in Firefox 158 and Firefox ESR 153.5.

Detection Guidance

This vulnerability is a denial-of-service issue in Firefox's WebRTC component. To detect it, check if your Firefox version is below 158 or Firefox ESR version is below 153.5. Use commands like 'firefox --version' to check the version. If outdated, update immediately.

Impact Analysis

An attacker could exploit this flaw to crash affected Firefox browsers by triggering the WebRTC component, leading to service disruption.

Compliance Impact

This vulnerability is a denial-of-service issue in WebRTC, which could disrupt service availability. While it does not directly impact data confidentiality or integrity, prolonged service disruption may affect compliance with availability requirements in standards like GDPR (Article 32) or HIPAA (Security Rule). However, the provided CVE details do not specify direct compliance impacts.

Mitigation Strategies

Update Firefox to version 158 or later and Firefox ESR to version 153.5 or later to address the DoS vulnerability in the WebRTC component.

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