CVE-2021-42300

Name: CVE-2021-42300
Creator: NVD / NIST
Published: 2021-11-10T01:19:47.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2021-42300 is a medium-severity vulnerability rated 6/10 on the CVSS scale. Azure Sphere Tampering Vulnerability. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

Azure Sphere Tampering Vulnerability

Metrics

CVSS 3.1

6/10

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

EPSS Probability

0.55%

41.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Azure Sphere	< 21.10

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42300Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42300Patch, Vendor Advisory

Timeline

Published: Nov 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42300?

Azure Sphere Tampering Vulnerability

How severe is CVE-2021-42300?

CVE-2021-42300 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42300?

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-2021-42300?

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

Scan your code now

Source: NVD / NIST