Microsoft Azure Functions vulnerabilities

5 CVEs affecting Microsoft Azure Functions, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-21532, published 2026-02-05.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2020-16904, published 2020-10-16. 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…
• CVE-2024-38204, published 2024-10-15. Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days. Improper access control in Imagine Cup allows an authorized attacker to elevate privileges over a network.
• CVE-2026-21532, published 2026-02-05. High severity, CVSS 8.2. EPSS: 0.9% chance of exploitation in the next 30 days. Azure Function Information Disclosure Vulnerability
• CVE-2024-49052, published 2024-11-26. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Missing authentication for critical function in Microsoft Azure PolicyWatch allows an unauthorized attacker to elevate privileges over a network.
• CVE-2025-33074, published 2025-04-30. High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days. Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.