Out of bounds write in WebRTC in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to potentially exploit heap corruption via a…

published 2020-02-11 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27537

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

Out of bounds write in WebRTC in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to potentially exploit heap corruption via a crafted video stream.

Patch / fix

fixed in 1 distros 5

Google Chrome 80.0.3987.87

debian ubuntu red hat opensuse arch linux

chromium Debian 14, Debian 13, Debian 12 80.0.3987.106-1

debian advisories DEBIAN-CVE-2020-6387

chromium-browser Ubuntu 16.04 LTS 80.0.3987.87-0ubuntu0.16.04.1
chromium-browser Ubuntu 18.04 LTS 80.0.3987.87-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2020-6387

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

chromium-browser RHEL 6 EXTRAS 80.0.3987.87-1.el6_10

red hat advisories RHSA-2020:0514

chromium openSUSE Tumbleweed 93.0.4577.82-1.1
chromium openSUSE Tumbleweed 113.0.5672.92-1.1
re2 Package Hub 12 SP3, Package Hub 12 20200101-25.1
chromium Package Hub 12 SP3, Package Hub 12 80.0.3987.87-31.1
chromium Package Hub 15 SP1 80.0.3987.87-bp151.3.59.1
chromium openSUSE Leap 15.1 80.0.3987.87-lp151.2.63.1

opensuse advisories openSUSE-SU-2024:10681-1 openSUSE-SU-2024:12948-1 openSUSE-SU-2020:0233-1 openSUSE-SU-2020:0210-1 openSUSE-SU-2020:0189-1

chromium Arch Linux 80.0.3987.87-1

arch linux advisories AVG-1092

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-6387 updated 2026-06-28 cvss 8.8

chromium-browser: Out of bounds write in WebRTC

Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10
fixed: vendor fix RHSA-2020:0514

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.81% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

Google Chrome

Classification

Weakness

CWE-787 Out-of-bounds Write

Technology feeds

Google Chrome rss critical rss

References

lists.opensuse.org /opensuse-security-announce/2020-02/msg00015.html
vendor-advisory
access.redhat.com /errata/RHSA-2020:0514
vendor-advisory
lists.opensuse.org /opensuse-security-announce/2020-02/msg00025.html
vendor-advisory
debian.org /security/2020/dsa-4638
vendor-advisory
security.gentoo.org /glsa/202003-08
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
vendor-advisory
chromereleases.googleblog.com /2020/02/stable-channel-update-for-desktop.html
vendor-advisory
crbug.com /1042535
permissions-required

Sources

CVE List CVE-2020-6387
NVD CVE-2020-6387

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary