CVE-2020-16904: Microsoft Azure Functions

Medium severity, CVSS 5.3. EPSS: 3.4% chance of exploitation in the next 30 days.

<p>An elevation of privilege vulnerability exists in the way Azure Functions validate access keys.</p> <p>An unauthenticated attacker who successfully exploited this vulnerability could invoke an HTTP Function without proper authorization.</p> <p>This security update addresses the vulnerability by correctly validating access keys used to access HTTP Functions.</p>

Affected products

• Microsoft Azure Functions: affected versions not specified

Published 2020-10-16. Last modified 2026-06-17.