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CVE-2026-33833 Microsoft CVE debrief

CVE-2026-33833 is a high-severity vulnerability in Azure Machine Learning that allows unauthorized attackers to perform spoofing over a network. The vulnerability has a CVSS score of 8.2 and is classified as HIGH. It was published on May 12, 2026, and last modified on June 18, 2026. The vulnerability is caused by improper neutralization of special elements in output used by a downstream component, allowing attackers to inject malicious data. Organizations using Azure Machine Learning should take immediate action to mitigate this vulnerability.

Vendor
Microsoft
Product
Azure Machine Learning
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-12
Original CVE updated
2026-06-18
Advisory published
2026-05-12
Advisory updated
2026-06-18

Who should care

Organizations using Azure Machine Learning, particularly those with high-security requirements, should be aware of this vulnerability and take immediate action to mitigate it. Security teams and administrators responsible for Azure Machine Learning deployments should prioritize patching and monitoring.

Technical summary

CVE-2026-33833 is an injection vulnerability in Azure Machine Learning that allows unauthorized attackers to perform spoofing over a network. The vulnerability has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N. It is caused by improper neutralization of special elements in output used by a downstream component. The vulnerability affects Azure Machine Learning version 3.0.0.

Defensive priority

high

Recommended defensive actions

  • Apply patches and updates provided by Microsoft to Azure Machine Learning
  • Monitor Azure Machine Learning deployments for suspicious activity
  • Implement additional security controls, such as input validation and output encoding
  • Conduct regular security audits and vulnerability assessments
  • Restrict access to Azure Machine Learning deployments to authorized personnel only

Evidence notes

The vulnerability is documented in the NVD database and has a CVE record. The CVSS score and vector are provided by the NVD. Microsoft has provided a vendor advisory for this vulnerability.

Official resources

public