CVE-2020-6521

Name: CVE-2020-6521
Creator: NVD / NIST
Published: 2020-07-22T17:15:13.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.70%

Last modified Jun 17, 2026

CVE-2020-6521 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Side-channel information leakage in autofill in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

Side-channel information leakage in autofill in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.70%

74.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Google	Chrome	< 84.0.4147.89	—
Opensuse	Backports Sle	15.0	Sp1
Debian	Debian Linux	10.0	—
Fedoraproject	Fedora	31	—
Fedoraproject	Fedora	32	—
Opensuse	Leap	15.1	—
Opensuse	Leap	15.2	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00069.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00018.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00041.htmlMailing List, Third Party Advisory
https://chromereleases.googleblog.com/2020/07/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
https://crbug.com/1075734Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTRPPTKZ2RKVH2XGQCWNFZ7FOGQ5LLCA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYIDWCHG24ZTFD4P42D4A4WWPPA74BCG/
https://security.gentoo.org/glsa/202007-08Third Party Advisory
https://www.debian.org/security/2021/dsa-4824Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00069.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00018.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00041.htmlMailing List, Third Party Advisory
https://chromereleases.googleblog.com/2020/07/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
https://crbug.com/1075734Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTRPPTKZ2RKVH2XGQCWNFZ7FOGQ5LLCA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYIDWCHG24ZTFD4P42D4A4WWPPA74BCG/
https://security.gentoo.org/glsa/202007-08Third Party Advisory
https://www.debian.org/security/2021/dsa-4824Third Party Advisory

Timeline

Published: Jul 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6521?

Side-channel information leakage in autofill in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

How severe is CVE-2020-6521?

CVE-2020-6521 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6521?

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-2020-6521?

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

Scan your code now

Source: NVD / NIST