CVE-2021-26429

Name: CVE-2021-26429
Creator: NVD / NIST
Published: 2021-08-12T18:15:08.74+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2021-26429 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. Azure Sphere Elevation of Privilege Vulnerability. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

Azure Sphere Elevation of Privilege Vulnerability

Metrics

CVSS 3.1

7.7/10

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

EPSS Probability

0.48%

37.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Microsoft	Azure Sphere	< 21.07

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26429Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26429Patch, Vendor Advisory

Timeline

Published: Aug 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26429?

Azure Sphere Elevation of Privilege Vulnerability

How severe is CVE-2021-26429?

CVE-2021-26429 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26429?

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-2021-26429?

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

Scan your code now

Source: NVD / NIST