What is CVE-2021-37976?

CVE-2021-37976 is a medium-severity vulnerability in Google Chrome, classified under Missing Authorization. CVSS score: 6.5/10. Published 2021-10-08.

How severe is CVE-2021-37976?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-37976 known to be exploited?

Yes. CVE-2021-37976 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Auth bypass in Google Chrome

CVE-2021-37976

Inappropriate implementation in Memory in Google Chrome prior to 94.0.4606.71 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Vulnerability class: Broken Access Control

EPSS: 0.199 (97.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Google Chrome — versions unspecified
Debian Debian_linux — versions 10.0, 11.0
Fedoraproject Fedora — versions 33, 34, 35

Weakness classification (CWE)

CWE-862 — Missing Authorization

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

chrome-cve-admin@google.com (x_refsource_MISC, Release Notes)
chrome-cve-admin@google.com (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)
chrome-cve-admin@google.com (x_refsource_FEDORA, vendor-advisory, Release Notes)
chrome-cve-admin@google.com (x_refsource_FEDORA, vendor-advisory, Release Notes)
chrome-cve-admin@google.com (x_refsource_FEDORA, vendor-advisory, Release Notes)
chrome-cve-admin@google.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_DEBIAN)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-37976?: CVE-2021-37976 is a medium-severity vulnerability in Google Chrome, classified under Missing Authorization. CVSS score: 6.5/10. Published 2021-10-08.
How severe is CVE-2021-37976?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-37976 known to be exploited?: Yes. CVE-2021-37976 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.