How severe is CVE-2026-32211?

CVE-2026-32211 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-32211 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32211?

CVE-2026-32211 affects Microsoft Azure Web Apps. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32211?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-32211 have an EU (EUVD) identifier?

Yes. CVE-2026-32211 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18560.

When was CVE-2026-32211 published?

CVE-2026-32211 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-32211

CVE-2026-32211 is a critical-severity vulnerability in Microsoft Azure Web Apps with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18560
Weakness: CWE-306
Affected product: Microsoft Azure Web Apps
Published: 2026-04-03
Last modified: 2026-06-17

Description

Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.

Frequently asked questions

What is CVE-2026-32211?: Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.
How severe is CVE-2026-32211?: CVE-2026-32211 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-32211 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32211?: CVE-2026-32211 affects Microsoft Azure Web Apps. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32211?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-32211 have an EU (EUVD) identifier?: Yes. CVE-2026-32211 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18560.
When was CVE-2026-32211 published?: CVE-2026-32211 was published on 2026-04-03 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32211

Affected products (1)

cpe:2.3:a:microsoft:azure_web_apps:-:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Azure Web Apps

CVE-2024-38194 — High (CVSS 8.4): An authenticated attacker can exploit an improper authorization vulnerability in Azure Web Apps to elevate privileges…

All CVEs affecting Microsoft Azure Web Apps →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →