CVE-2026-6753

—

CVSS 3.1

7.3 high

EPSS

<1%p23

Published

Apr 21, 2026 (Apr 21, 2026)

Modified

Jul 15, 2026

Description

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Vendors: mozilla
Products: firefox, thunderbird
Weakness: CWE-119, CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

NVD CVE.org GitHub PoCs EPSS (0.3%)

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