{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Quac Tran"
        ]
      }
    ],
    "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-2026-62898 Microsoft QUIC Information Disclosure Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898"
      },
      {
        "category": "self",
        "summary": "CVE-2026-62898 Microsoft QUIC Information Disclosure Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-62898.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 QUIC Information Disclosure Vulnerability",
    "tracking": {
      "current_release_date": "2026-08-13T07:00:00.000Z",
      "generator": {
        "date": "2026-08-27T14:16:32.537Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-62898",
      "initial_release_date": "2026-08-11T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-08-11T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-08-13T07:00:00.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Removed Linux and macOS products from the Affected Software table. This is an informational change only."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<10.0.11",
                "product": {
                  "name": ".NET 10.0 installed on Windows <10.0.11",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "10.0.11",
                "product": {
                  "name": ".NET 10.0 installed on Windows 10.0.11",
                  "product_id": "20837"
                }
              }
            ],
            "category": "product_name",
            "name": ".NET 10.0 installed on Windows"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<17.14.38",
                "product": {
                  "name": "Microsoft Visual Studio 2022 version 17.14 <17.14.38",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "17.14.38",
                "product": {
                  "name": "Microsoft Visual Studio 2022 version 17.14 17.14.38",
                  "product_id": "16767"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Visual Studio 2022 version 17.14"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<18.8.3",
                "product": {
                  "name": "Microsoft Visual Studio 2026 version 18.8 <18.8.3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "18.8.3",
                "product": {
                  "name": "Microsoft Visual Studio 2026 version 18.8 18.8.3",
                  "product_id": "21681"
                }
              }
            ],
            "category": "product_name",
            "name": "Microsoft Visual Studio 2026 version 18.8"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<9.0.19",
                "product": {
                  "name": ".NET 9.0 installed on Windows <9.0.19",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "9.0.19",
                "product": {
                  "name": ".NET 9.0 installed on Windows 9.0.19",
                  "product_id": "12434"
                }
              }
            ],
            "category": "product_name",
            "name": ".NET 9.0 installed on Windows"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<8.0.30",
                "product": {
                  "name": ".NET 8.0 installed on Windows <8.0.30",
                  "product_id": "5"
                }
              },
              {
                "category": "product_version",
                "name": "8.0.30",
                "product": {
                  "name": ".NET 8.0 installed on Windows 8.0.30",
                  "product_id": "12414"
                }
              }
            ],
            "category": "product_name",
            "name": ".NET 8.0 installed on Windows"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-62898",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could potentially read portions of process memory.",
          "title": "What type of information could be disclosed by this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "12414",
          "12434",
          "16767",
          "20837",
          "21681"
        ],
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-62898 Microsoft QUIC Information Disclosure Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898"
        },
        {
          "category": "self",
          "summary": "CVE-2026-62898 Microsoft QUIC Information Disclosure Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-62898.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "10.0.11:Security Update:https://support.microsoft.com/help/5122106",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5122106"
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "17.14.38:Security Update",
          "product_ids": [
            "3"
          ],
          "url": ""
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "18.8.3:Security Update",
          "product_ids": [
            "1"
          ],
          "url": ""
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "9.0.19:Security Update:https://support.microsoft.com/help/5122105",
          "product_ids": [
            "4"
          ],
          "url": "https://support.microsoft.com/help/5122105"
        },
        {
          "category": "vendor_fix",
          "date": "2026-08-11T07:00:00.000Z",
          "details": "8.0.30:Security Update:https://support.microsoft.com/help/5122104",
          "product_ids": [
            "5"
          ],
          "url": "https://support.microsoft.com/help/5122104"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Information Disclosure"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft QUIC Information Disclosure Vulnerability"
    }
  ]
}