Use after free in extensions in Google Chrome prior to 81.0.4044.92 allowed an attacker who convinced a user to install a malicious extensi…

published 2020-04-13 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27604

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

Use after free in extensions in Google Chrome prior to 81.0.4044.92 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.

Patch / fix

fixed in 1 distros 5

Google Chrome 81.0.4044.92

debian ubuntu red hat opensuse arch linux

chromium Debian 14, Debian 13, Debian 12 81.0.4044.92-1

debian advisories DEBIAN-CVE-2020-6454

chromium-browser Ubuntu 16.04 LTS 81.0.4044.122-0ubuntu0.16.04.1
chromium-browser Ubuntu 18.04 LTS 81.0.4044.122-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2020-6454

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 81.0.4044.92-2.el6_10

red hat advisories RHSA-2020:1487

chromium openSUSE Tumbleweed 93.0.4577.82-1.1
chromium openSUSE Tumbleweed 113.0.5672.92-1.1
chromium Package Hub 15 SP1 81.0.4044.92-bp151.3.66.1
chromium openSUSE Leap 15.1 81.0.4044.92-lp151.2.77.1

opensuse advisories openSUSE-SU-2024:10681-1 openSUSE-SU-2024:12948-1 openSUSE-SU-2020:0540-1 openSUSE-SU-2020:0519-1

chromium Arch Linux 81.0.4044.92-1

arch linux advisories AVG-1128

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-2020-6454 updated 2026-06-28 cvss 8.8

chromium-browser: Use after free in extensions

Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 81.0.4044.92-2.el6_10
fixed: vendor fix RHSA-2020:1487

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

1.44% chance of exploitation in the next 30 days, higher than 73% 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-416 Use After Free

Technology feeds

Google Chrome rss critical rss

References

lists.opensuse.org /opensuse-security-announce/2020-04/msg00024.html
vendor-advisory, mailing-list, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2020-04/msg00031.html
vendor-advisory, mailing-list, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/6XWIVVYIQU67QR2LHNGGZBS4FZOW2RQO/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/HFVP775RPRDVY5FUCN7ABH5AE74TQFDD/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/XMXPDHEEACPD3BCMTC26SCCYB2ZMUOAO/
vendor-advisory
debian.org /security/2020/dsa-4714
vendor-advisory, third-party-advisory
chromereleases.googleblog.com /2020/04/stable-channel-update-for-desktop_7.html
release-notes, vendor-advisory
crbug.com /1019161
issue-tracking, vendor-advisory

Sources

CVE List CVE-2020-6454
NVD CVE-2020-6454

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