CVE-2026-109771 - Vulnerability Details - OpenCVE

Information disclosure in the WebRTC: Networking component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mozilla	Firefox Thunderbird

No data.

No data.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2059658
https://www.mozilla.org/security/advisories/mfsa2026-106/
https://www.mozilla.org/security/advisories/mfsa2026-109/

History

Tue, 13 Oct 2026 22:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mozilla Mozilla firefox Mozilla thunderbird
Vendors & Products		Mozilla Mozilla firefox Mozilla thunderbird

Tue, 13 Oct 2026 18:30:00 +0000

Type	Values Removed	Values Added
Description	Information disclosure in the WebRTC: Networking component. This vulnerability was fixed in Firefox 158.	Information disclosure in the WebRTC: Networking component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
References		https://www.mozilla.org/security/advisories/mfsa2026-109/

Tue, 13 Oct 2026 15:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-200
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 13:00:00 +0000

Type	Values Removed	Values Added
Description		Information disclosure in the WebRTC: Networking component. This vulnerability was fixed in Firefox 158.
Title		Information disclosure in the WebRTC: Networking component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2059658 https://www.mozilla.org/security/advisories/mfsa2026-106/

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-10-13T12:29:33.709Z

Updated: 2026-10-13T18:08:31.713Z

Reserved: 2026-10-13T00:48:53.766Z

Link: CVE-2026-109771

Vulnrichment

Updated: 2026-10-13T14:57:46.226Z

NVD

Status : Deferred

Published: 2026-10-13T13:17:27.990

Modified: 2026-10-13T19:18:41.420

Link: CVE-2026-109771

Redhat

No data.

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