CVE-2026-32207: Azure Machine Learning Notebook Spoofing Vulnerability
CVE-2026-32207 is a spoofing vulnerability in Azure Machine Learning Notebook, rated Critical by Microsoft, with a CVSS 3.1 base score of 8.8 (High). An attacker can exploit it remotely over the network, without any privileges and only if a user takes an action. Microsoft has not reported exploitation in the wild. The EPSS model estimates a 0.58% probability of exploitation activity in the next 30 days, higher than 48% of all scored vulnerabilities. Microsoft published it on 7 May 2026, outside Patch Tuesday. It affects 1 product in 1 product family (Azure).
Key facts
- CVE ID
- CVE-2026-32207
- Severity
- High CVSS 8.8
- Microsoft severity
- Critical
- Impact
- Spoofing
- Exploited in the wild
- No
- Publicly disclosed
- No
- Weakness
- CWE-79
- EPSS
- 0.58% (percentile 48%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- May 2026 Patch Tuesday
- Product families
- Azure
CVSS score and vector
Microsoft scores CVE-2026-32207 at 8.8 (temporal 7.7) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Azure Machine Learning allows an unauthorized attacker to perform spoofing over a network.
Frequently asked questions (Microsoft)
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Affected products (1)
Azure
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Azure Machine Learning |
NIST NVD data
- NVD status
- Analyzed
- NVD CVSS
- 8.8 (HIGH)
- NVD weakness
- CWE-79
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| azure machine learning | all listed versions |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32207 (Vendor Advisory)
Acknowledgments
- Jianyang Song
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |