CVE-2021-42307

Name: CVE-2021-42307
Creator: NVD / NIST
Published: 2023-07-01T00:15:09.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2021-42307 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Microsoft Edge (Chromium-based) Information Disclosure Vulnerability. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

1.04%

59.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Edge Chromium	< 95.0.1020.30

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42307Patch, Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42307Patch, Vendor Advisory

Timeline

Published: Jul 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42307?

Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

How severe is CVE-2021-42307?

CVE-2021-42307 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42307?

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-2021-42307?

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

Scan your code now

Source: NVD / NIST