What is CVE-2021-28460?

CVE-2021-28460 is a high-severity vulnerability in Microsoft Azure Sphere. CVSS score: 8.1/10. Published 2021-04-13.

How severe is CVE-2021-28460?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Microsoft Azure Sphere

CVE-2021-28460

Azure Sphere Unsigned Code Execution Vulnerability

Published 2021-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28460 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28460?: CVE-2021-28460 is a high-severity vulnerability in Microsoft Azure Sphere. CVSS score: 8.1/10. Published 2021-04-13.
How severe is CVE-2021-28460?: High severity. CVSS v3 base score is 8.1 out of 10.