CVE-2021-42308

Name: CVE-2021-42308
Creator: NVD / NIST
Published: 2021-11-24T01:15:08.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.1/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2021-42308 is a low-severity vulnerability rated 3.1/10 on the CVSS scale. Microsoft Edge (Chromium-based) Spoofing Vulnerability. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Metrics

CVSS 3.1

3.1/10

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

EPSS Probability

1.12%

62.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-290

Affected Software

Vendor	Product	Versions
Microsoft	Edge Chromium	< 96.0.1054.29

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42308Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42308Patch, Vendor Advisory

Timeline

Published: Nov 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42308?

Microsoft Edge (Chromium-based) Spoofing Vulnerability

How severe is CVE-2021-42308?

CVE-2021-42308 has a CVSS score of 3.1/10 (LOW severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42308?

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-2021-42308?

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

Scan your code now

Source: NVD / NIST