CVE-2020-6831

high
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
8.0

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-6831.html

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-6831

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202005-2

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202005-3

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202005-7

OS impact

OSVersionStatusFixed in
arch archfixed68.8.0-1
debian debianbookwormfixed83.0.4103.83-1
debian debianbullseyefixed83.0.4103.83-1
debian debianforkyfixed83.0.4103.83-1
debian debiansidfixed83.0.4103.83-1
debian debiantrixiefixed83.0.4103.83-1
suse slesaffected

References

Verify integrity in audit chain (admin only). AS-IS.