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8.8

Unauthorized Code Execution in Microsoft Azure Functions

CVE-2025-33074 · published 1 year ago
Summary

An attacker with authorized access to a Microsoft Azure Functions environment can execute code remotely, potentially leading to unauthorized actions. This flaw affects Azure Functions, which are used to run serverless code in the cloud. If you use Azure Functions, ensure that you keep your environment and code up to date with the latest security patches to minimize the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
microsoft azure_functions All versions
cpe:2.3:a:microsoft:azure_functions:-:*:*:*:*:*:*:*
microsoft azure functions -
Original advisory text
Azure Functions Remote Code Execution Vulnerability
Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
8.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-347Improper Verification of Cryptographic Signature
Timeline
Published30 Apr 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-33074 · NVD
CVE-2025-33074 · MITRE
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