CVE-2020-15973

Name: CVE-2020-15973
Creator: NVD / NIST
Published: 2020-11-03T03:15:13.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2020-15973 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Insufficient policy enforcement in extensions in Google Chrome prior to 86.0.4240.75 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension.. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

Insufficient policy enforcement in extensions in Google Chrome prior to 86.0.4240.75 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS Probability

1.02%

58.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Google	Chrome	< 86.0.4240.75	—
Fedoraproject	Fedora	31	—
Fedoraproject	Fedora	32	—
Fedoraproject	Fedora	33	—
Opensuse	Backports Sle	15.0	Sp2
Debian	Debian Linux	10.0	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.htmlMailing List, Third Party Advisory
https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
https://crbug.com/1106890Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
https://www.debian.org/security/2021/dsa-4824Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.htmlMailing List, Third Party Advisory
https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
https://crbug.com/1106890Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
https://www.debian.org/security/2021/dsa-4824Third Party Advisory

Timeline

Published: Nov 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15973?

How severe is CVE-2020-15973?

CVE-2020-15973 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15973?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15973?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST