{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "kap0k"
        ]
      }
    ],
    "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-2024-21426 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21426"
      },
      {
        "category": "self",
        "summary": "CVE-2024-21426 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21426.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 SharePoint Server Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2024-03-12T07:00:00.000Z",
      "generator": {
        "date": "2025-05-03T00:46:37.492Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2024-21426",
      "initial_release_date": "2024-03-12T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-03-12T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.5439.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 \u003c16.0.5439.1000",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.5439.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 16.0.5439.1000",
              "product_id": "10950"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Enterprise Server 2016"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.10408.20000",
            "product": {
              "name": "Microsoft SharePoint Server 2019 \u003c16.0.10408.20000",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.10408.20000",
            "product": {
              "name": "Microsoft SharePoint Server 2019 16.0.10408.20000",
              "product_id": "11585"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server 2019"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.17328.20136",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition \u003c16.0.17328.20136",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.17328.20136",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition 16.0.17328.20136",
              "product_id": "11961"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server Subscription Edition"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-21426",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker must send the user a malicious file and convince them to open it.",
          "title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploits this vulnerability could perform a remote attack that could enable access to the victim\u0027s information and the ability to alter information. Successful exploitation could also potentially cause downtime for the targeted environment.",
          "title": "According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of confidentiality (C:H), integrity (I:H), and availability (A:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.",
          "title": "According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?"
        }
      ],
      "product_status": {
        "fixed": [
          "10950",
          "11585",
          "11961"
        ],
        "known_affected": [
          "1",
          "2",
          "3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-21426 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21426"
        },
        {
          "category": "self",
          "summary": "CVE-2024-21426 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21426.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-03-12T07:00:00.000Z",
          "details": "16.0.5439.1000:Security Update:https://support.microsoft.com/help/5002559",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5002559"
        },
        {
          "category": "vendor_fix",
          "date": "2024-03-12T07:00:00.000Z",
          "details": "16.0.10408.20000:Security Update:https://support.microsoft.com/help/5002562",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5002562"
        },
        {
          "category": "vendor_fix",
          "date": "2024-03-12T07:00:00.000Z",
          "details": "16.0.17328.20136:Security Update:https://support.microsoft.com/help/5002564",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/5002564"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.8,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft SharePoint Server Remote Code Execution Vulnerability"
    }
  ]
}