{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "XBREACH.AI TEAM with https://xbreach.ai/"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "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": "Required. The vulnerability documented by this CVE requires 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-2026-58279 Azure CycleCloud Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58279"
      },
      {
        "category": "self",
        "summary": "CVE-2026-58279 Azure CycleCloud Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58279.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": "Azure CycleCloud Elevation of Privilege Vulnerability",
    "tracking": {
      "current_release_date": "2026-07-14T07:00:00.000Z",
      "generator": {
        "date": "2026-07-14T20:05:38.139Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-58279",
      "initial_release_date": "2026-07-14T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-07-14T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c8.9.1",
            "product": {
              "name": "Azure CycleCloud 8.9.1 \u003c8.9.1",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "8.9.1",
            "product": {
              "name": "Azure CycleCloud 8.9.1 8.9.1",
              "product_id": "21547"
            }
          }
        ],
        "category": "product_name",
        "name": "Azure CycleCloud 8.9.1"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-58279",
      "cwe": {
        "id": "CWE-862",
        "name": "Missing Authorization"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Customers should update to Azure CycleCloud 8.9.1 (Build 8.9.1-3806), which includes the fix for this vulnerability. New installations and upgrades to an existing CycleCloud deployment will receive the updated packages containing the fix.\nFor installation and upgrade guidance, see:\nInstall CycleCloud, Upgrade an existing CycleCloud installation\nUpdated packages are available through Microsoft\u0027s package repositories and the Azure Marketplace image for CycleCloud 8.9.1.",
          "title": "What do I need to do to protect myself?"
        },
        {
          "category": "faq",
          "text": "A low-privilege attacker who successfully exploits the vulnerability could potentially elevate their privileges to perform unauthorized modification of another user\u0027s cluster.",
          "title": "What privileges could be gained by an attacker who successfully exploited the vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could gain the ability to modify another user\u0027s cluster without authorization. It does not lead to information disclosure or service downtime.",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to no loss of confidentiality (C:N) and availability (A:L), but could lead to major loss of integrity (I:H). What does that mean for this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "21547"
        ],
        "known_affected": [
          "1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-58279 Azure CycleCloud Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58279"
        },
        {
          "category": "self",
          "summary": "CVE-2026-58279 Azure CycleCloud Elevation of Privilege Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58279.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-14T07:00:00.000Z",
          "details": "8.9.1:Security Update - PMC RPM:https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8",
          "product_ids": [
            "1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8"
        },
        {
          "category": "vendor_fix",
          "date": "2026-07-14T07:00:00.000Z",
          "details": "8.9.1:Security Update - PMC DEB:https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8",
          "product_ids": [
            "1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8"
        },
        {
          "category": "vendor_fix",
          "date": "2026-07-14T07:00:00.000Z",
          "details": "8.9.1:Security Update - Marketplace Image:https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8",
          "product_ids": [
            "1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/cyclecloud/release-notes/8-9-1?view=cyclecloud-8"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalScore": 0.0,
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.9,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Azure CycleCloud Elevation of Privilege Vulnerability"
    }
  ]
}