How severe is CVE-2024-21400?

CVE-2024-21400 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21400?

CVE-2024-21400 affects Microsoft Confidental Containers. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21400?

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-2024-21400 have an EU (EUVD) identifier?

Yes. CVE-2024-21400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19110.

When was CVE-2024-21400 published?

CVE-2024-21400 was published on 2024-03-12 and last updated on 2026-06-17.

CVE-2024-21400

CVE-2024-21400 is a critical-severity vulnerability in Microsoft Confidental Containers with a CVSS 3.x base score of 9.0. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19110
Weakness: CWE-22
Affected product: Microsoft Confidental Containers
Published: 2024-03-12
Last modified: 2026-06-17

Description

Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2024-21400?: Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability
How severe is CVE-2024-21400?: CVE-2024-21400 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21400?: CVE-2024-21400 affects Microsoft Confidental Containers. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21400?: 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-2024-21400 have an EU (EUVD) identifier?: Yes. CVE-2024-21400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19110.
When was CVE-2024-21400 published?: CVE-2024-21400 was published on 2024-03-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21400

Affected products (1)

cpe:2.3:a:microsoft:confidental_containers:*:*:*:*:*:azure_cli:*:*

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