{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "\u003ca href=\"https://x.com/yuvalavra\"\u003eYuval Avrahami\u003c/a\u003e"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Critical"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Not required. The vulnerability documented by this CVE requires no customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-26124 Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26124"
      },
      {
        "category": "self",
        "summary": "CVE-2026-26124 Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26124.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability",
    "tracking": {
      "current_release_date": "2026-03-06T08:00:00.000Z",
      "generator": {
        "date": "2026-03-06T19:25:43.954Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-26124",
      "initial_release_date": "2026-03-05T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-03-05T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-03-06T08:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added FAQ information. This is an informational change only."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "category": "product_name",
        "name": "Microsoft ACI Confidential Containers",
        "product": {
          "name": "Microsoft ACI Confidential Containers",
          "product_id": "20672"
        }
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-26124",
      "cwe": {
        "id": "CWE-35",
        "name": "Path Traversal: \u0027.../...//\u0027"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "This vulnerability has been mitigated by Microsoft in the Azure Confidential ACI service. No service update, patch, reboot, or upgrade is required.\nFor Azure Confidential ACI workloads, customers are expected to enforce existing Confidential Compute policies. Customers should verify that their Confidential Compute Environment (CCE) policy enforces the documented minimum Security Version Number (SVN) for infrastructure sidecar components, as described in the Confidential ACI configuration guidance.\nIf a customer finds that their policy configuration does not align with the published minimum SVN guidance, updating the configuration is considered standard policy enforcement and not a vulnerability\u2011specific remediation. No additional customer action is required beyond following existing guidance.\nPlease refer to the follwoing for more information: https://github.com/microsoft/confidential-aci-examples/blob/main/docs/Confidential_ACI_SCHEME.md",
          "title": "Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?"
        },
        {
          "category": "faq",
          "text": "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.\nPlease see Toward greater transparency: Unveiling Cloud Service CVEs for more information.",
          "title": "Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "20672"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-26124 Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26124"
        },
        {
          "category": "self",
          "summary": "CVE-2026-26124 Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26124.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "20672"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability"
    }
  ]
}