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TI-2020-12896 Aliases CVE-2020-16904GHSA-v3gf-q256-843h

Azure Functions Elevation of Privilege Vulnerability

Priority MEDIUM 48CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-863.

Summary

<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>

Why it matters now

EPSS 0.03373 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftAzure FunctionsN/A—No fix listedCNA
  • Azure Functions VendorMicrosoft Affected N/A Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:azure_functions:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:azure_functions:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-16904
  2. 2026-10-03 Alias added: GHSA-v3gf-q256-843h

References

Patch 1

  • TI-2024-25485 Imagine Cup site Information Disclosure Vulnerability CVSS 3.1HIGH 7.5
  • TI-2024-32719 Microsoft Azure PolicyWatch Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-17385 Azure Function Information Disclosure Vulnerability CVSS 3.1HIGH 8.2
  • TI-2025-24063 Azure Functions Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences