Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability
Priority MEDIUM 44CWE-552Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.
Summary
Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01338 71st percentileScored 2026-11-07
Fix Fixed Azure Kubernetes Service (Microsoft): 0.3.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Azure Kubernetes Service (Microsoft) Fixed in 0.3.3
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Elevation of Privilege
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
| Product | Status | Plan or fix |
|---|---|---|
| Azure Kubernetes Service Confidential Containers | Fixed | 0.3.3 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21403
- 2026-10-03 Alias added: GHSA-88fq-wp8p-xcg5
References
More Microsoft Azure Kubernetes Service vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2023-13726 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-40538 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 10.0
- TI-2026-37250 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.4
- TI-2026-25539 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 10.0
- TI-2024-14136 Microsoft Azure Kubernetes Service Confidential Container Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.0
Sources
- CVE-2024-21403 · CVE Program
- CVE-2024-21403 · NVD
- FIRST EPSS
- GHSA-88fq-wp8p-xcg5 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-21403 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences