{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-32226",
        "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "state": "PUBLISHED",
        "assignerShortName": "microsoft",
        "dateReserved": "2026-03-11T01:49:58.662Z",
        "datePublished": "2026-04-14T16:57:44.474Z",
        "dateUpdated": "2026-10-15T15:52:57.281Z"
    },
    "containers": {
        "cna": {
            "title": ".NET Framework Denial of Service Vulnerability",
            "datePublic": "2026-04-14T14:00:00.000Z",
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.8.0",
                                    "versionEndExcluding": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.8.0",
                                    "versionEndExcluding": "2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "10.0.0.0",
                                    "versionEndExcluding": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.8.0.0",
                                    "versionEndExcluding": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.8.1",
                                    "versionEndExcluding": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.5.0",
                                    "versionEndExcluding": "2.0.50727.8982 & 3.0.30729.8976"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "4.8.4801.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 3.5",
                    "platforms": [
                        "Windows Server 2012",
                        "Windows Server 2012 (Server Core installation)",
                        "Windows Server 2012 R2",
                        "Windows Server 2012 R2 (Server Core installation)"
                    ],
                    "versions": [
                        {
                            "version": "3.5.0",
                            "lessThan": "2.0.50727.8982 & 3.0.30729.8976",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 3.5 AND 4.7.2",
                    "platforms": [
                        "Windows 10 Version 1809 for 32-bit Systems",
                        "Windows 10 Version 1809 for ARM64-based Systems",
                        "Windows 10 Version 1809 for x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "4.7.0",
                            "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 3.5 AND 4.8",
                    "platforms": [
                        "Windows 10 Version 1809 for 32-bit Systems",
                        "Windows 10 Version 1809 for ARM64-based Systems",
                        "Windows 10 Version 1809 for x64-based Systems",
                        "Windows 10 Version 21H2 for 32-bit Systems",
                        "Windows 10 Version 21H2 for ARM64-based Systems",
                        "Windows 10 Version 21H2 for x64-based Systems",
                        "Windows 10 Version 22H2 for 32-bit Systems",
                        "Windows 10 Version 22H2 for ARM64-based Systems",
                        "Windows 10 Version 22H2 for x64-based Systems",
                        "Windows 11 version 21H2 for x64-based Systems",
                        "Windows Server 2022",
                        "Windows Server 2022 (Server Core installation)",
                        "Windows Server, version 20H2 (Server Core Installation)"
                    ],
                    "versions": [
                        {
                            "version": "4.8.0",
                            "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 3.5 AND 4.8.1",
                    "platforms": [
                        "Windows 10 Version 21H2 for 32-bit Systems",
                        "Windows 10 Version 21H2 for ARM64-based Systems",
                        "Windows 10 Version 21H2 for x64-based Systems",
                        "Windows 10 Version 22H2 for 32-bit Systems",
                        "Windows 10 Version 22H2 for ARM64-based Systems",
                        "Windows 10 Version 22H2 for x64-based Systems",
                        "Windows 11 Version 22H2 for ARM64-based Systems",
                        "Windows 11 Version 22H2 for x64-based Systems",
                        "Windows 11 Version 23H2 for ARM64-based Systems",
                        "Windows 11 Version 23H2 for x64-based Systems",
                        "Windows 11 Version 24H2 for ARM64-based Systems",
                        "Windows 11 Version 24H2 for x64-based Systems",
                        "Windows 11 Version 25H2 for ARM64-based Systems",
                        "Windows 11 Version 25H2 for x64-based Systems",
                        "Windows 11 Version 26H1 for ARM64-based Systems",
                        "Windows 11 version 26H1 for x64-based Systems",
                        "Windows Server 2022",
                        "Windows Server 2022 (Server Core installation)",
                        "Windows Server 2022, 23H2 Edition (Server Core installation)",
                        "Windows Server 2025",
                        "Windows Server 2025 (Server Core installation)"
                    ],
                    "versions": [
                        {
                            "version": "4.8.1",
                            "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2",
                    "platforms": [
                        "Windows Server 2012",
                        "Windows Server 2012 (Server Core installation)",
                        "Windows Server 2012 R2",
                        "Windows Server 2012 R2 (Server Core installation)"
                    ],
                    "versions": [
                        {
                            "version": "4.7.0",
                            "lessThan": "4.8.4801.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 4.7.2",
                    "platforms": [
                        "Windows 10 Version 1809 for 32-bit Systems",
                        "Windows 10 Version 1809 for ARM64-based Systems",
                        "Windows 10 Version 1809 for x64-based Systems"
                    ],
                    "versions": [
                        {
                            "version": "10.0.0.0",
                            "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 4.8",
                    "platforms": [
                        "Windows 10 Version 1607 for x64-based Systems",
                        "Windows 10 Version 22H2 for x64-based Systems",
                        "Windows 11 Version 22H2 for x64-based Systems",
                        "Windows Server 2012 (Server Core installation)",
                        "Windows Server 2012 R2",
                        "Windows Server 2012 R2 (Server Core installation)"
                    ],
                    "versions": [
                        {
                            "version": "4.8.0",
                            "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "Microsoft",
                    "product": "Microsoft .NET Framework 4.8.1",
                    "platforms": [
                        "Windows Server 2022 (Server Core installation)"
                    ],
                    "versions": [
                        {
                            "version": "4.8.0.0",
                            "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.",
                    "lang": "en-US"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')",
                            "lang": "en-US",
                            "type": "CWE",
                            "cweId": "CWE-362"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
                "shortName": "microsoft",
                "dateUpdated": "2026-10-15T15:52:57.281Z"
            },
            "references": [
                {
                    "name": ".NET Framework Denial of Service Vulnerability",
                    "tags": [
                        "vendor-advisory",
                        "patch"
                    ],
                    "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en-US",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.9,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"
                    }
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-14T19:03:36.736622Z",
                                "id": "CVE-2026-32226",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-04-14T19:20:32.328Z"
                }
            }
        ]
    }
}