{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      }
    ],
    "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-2025-21198 Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21198"
      },
      {
        "category": "self",
        "summary": "CVE-2025-21198 Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21198.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 High Performance Compute (HPC) Pack Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2025-02-11T08:00:00.000Z",
      "generator": {
        "date": "2025-03-19T17:45:57.617Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-21198",
      "initial_release_date": "2025-02-11T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-02-11T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c6.3.8328.0",
            "product": {
              "name": "Microsoft HPC Pack 2019 \u003c6.3.8328.0",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "6.3.8328.0",
            "product": {
              "name": "Microsoft HPC Pack 2019 6.3.8328.0",
              "product_id": "12455"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft HPC Pack 2019"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c2016.3",
            "product": {
              "name": "Microsoft HPC Pack 2016 \u003c2016.3",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "2016.3",
            "product": {
              "name": "Microsoft HPC Pack 2016 2016.3",
              "product_id": "12454"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft HPC Pack 2016"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-21198",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Multiple networking topologies are available to connect High Performance Compute (HPC) resources which are reliant upon intra-nets or private networks and do not expose HPC resources to the public internet regardless of implementation. An attacker must have access to the network connecting the targeted clusters and nodes (PR:L) and must send a specially crafted HTTPS request to the head node (AV:A) to successfully exploit this vulnerability.\nFor more information on how HPC resources can be connected, please reference this documentation regarding Understanding HPC Cluster Network Topologies.",
          "title": "According to the CVSS metric, the attack vector is adjacent (AV:A) and privileges required are low (PR:L). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker could exploit this vulnerability by sending a specially crafted HTTPS request to the targeted head node or Linux compute node granting them the ability to perform RCE on other clusters or nodes connected to the targeted head node.",
          "title": "According to the CVSS metric, the scope is changed (S:C). What does that mean for this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "12454",
          "12455"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-21198 Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21198"
        },
        {
          "category": "self",
          "summary": "CVE-2025-21198 Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21198.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-02-11T08:00:00.000Z",
          "details": "6.3.8328.0:Security Update:https://learn.microsoft.com/en-us/powershell/high-performance-computing/release-notes-for-hpc-pack-2019-update-3?view=hpc19-ps",
          "product_ids": [
            "1"
          ],
          "url": "https://learn.microsoft.com/en-us/powershell/high-performance-computing/release-notes-for-hpc-pack-2019-update-3?view=hpc19-ps"
        },
        {
          "category": "vendor_fix",
          "date": "2025-02-11T08:00:00.000Z",
          "details": "2016.3:Security Update:https://learn.microsoft.com/en-us/powershell/high-performance-computing/release-notes-for-hpc-pack-2016-update-3?view=hpc16-ps",
          "product_ids": [
            "2"
          ],
          "url": "https://learn.microsoft.com/en-us/powershell/high-performance-computing/release-notes-for-hpc-pack-2016-update-3?view=hpc16-ps"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.0,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "CHANGED",
            "temporalScore": 7.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability"
    }
  ]
}