What is CVE-2026-21532?

CVE-2026-21532 is a high-severity vulnerability in Microsoft Azure Functions, classified under Information Disclosure. CVSS score: 8.2/10. Published 2026-02-05.

How severe is CVE-2026-21532?

High severity. CVSS v3 base score is 8.2 out of 10.

Information disclosure in Microsoft Azure Functions

CVE-2026-21532

Azure Function Information Disclosure Vulnerability

Vulnerability class: Information Disclosure

EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Microsoft Azure Functions
Microsoft Azure_functions

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21532?: CVE-2026-21532 is a high-severity vulnerability in Microsoft Azure Functions, classified under Information Disclosure. CVSS score: 8.2/10. Published 2026-02-05.
How severe is CVE-2026-21532?: High severity. CVSS v3 base score is 8.2 out of 10.