CVE-2020-16904

medium Microsoft
CVSS v3 Base Score
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score
2.4%
Exploitation probability in 30 days
Top 15% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Published: October 16, 2020 (2036 days ago)
Last Modified: February 23, 2026
Vendor: Microsoft

Description

<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>

CWE

CWE-863

Affected Products

microsoft azure functions

References

🔗 portal.msrc.microsoft.com 🔗 portal.msrc.microsoft.com