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TI-2026-17376 Aliases CVE-2026-21522GHSA-2628-hv78-qx7g

Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability

Priority LOW 32CWE-77Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
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

Improper neutralization of special elements used in a command ('command injection') in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix Fixed Microsoft ACI Confidential Containers (Microsoft): 1.2.8

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

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft ACI Confidential Containers1.0.0 to before 1.2.81.2.8Patch availableCNA
  • Microsoft ACI Confidential Containers VendorMicrosoft Affected 1.0.0 to before 1.2.8 Fixed in 1.2.8 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:confcom:*:*:*:*:*:azure_cli:*:*before 1.2.8VulnerableMicrosoft
  • cpe:2.3:a:microsoft:confcom:*:*:*:*:*:azure_cli:*:* Versions before 1.2.8 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft ACI Confidential Containers (Microsoft) Fixed in 1.2.8

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft ACI Confidential ContainersFixed 1.2.8 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21522
  2. 2026-10-03 Alias added: GHSA-2628-hv78-qx7g

References

Patch 1

  • TI-2024-14160 Microsoft Azure Kubernetes Service Confidential Container Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences