CVE-2020-6831

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CVSS 3.1

9.8 critical

EPSS

6%p93

Published

May 26, 2020 (May 26, 2020)

Modified

Jun 17, 2026

Description

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Vendors: mozilla canonical debian opensuse
Products: firefox, firefox esr, thunderbird, ubuntu linux, debian linux, leap
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (5.8%)

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