{"id":"CVE-2021-31957","revision":"158a348cedd1447fa21ea7bc63ce9a03","records":[{"revision":"158a348cedd1447fa21ea7bc63ce9a03","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2021-31957","aliases":[],"title":"ASP.NET Core Denial of Service Vulnerability","description":"ASP.NET Core Denial of Service Vulnerability","state":0,"publishedAt":"2021-06-08T22:46:26+00:00","modifiedAt":"2026-10-07T16:12:06.426+00:00","affected":[{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16.0\",\n                            \"lessThan\": \"16.4.23\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16.0.0\",\n                            \"lessThan\": \"16.7.16\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"15.0.0\",\n                            \"lessThan\": \"16.9.7\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16.10.0\",\n                            \"lessThan\": \"16.10.1\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Visual Studio 2019 for Mac version 8.10","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Visual Studio 2019 for Mac version 8.10\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8.1.0\",\n                            \"lessThan\": \"8.10.1\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET Core 3.1","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET Core 3.1\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.1\",\n                            \"lessThan\": \"3.1.16\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 5.0","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 5.0\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"platforms\": [\n                        \"Unknown\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0.0\",\n                            \"lessThan\": \"5.0.7\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"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","score":5.9,"severity":"MEDIUM"}],"references":["https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-31957","license":"CVE Program Terms of Use","key":"cve-program:CVE-2021-31957","identifiers":["CVE-2021-31957"]},"retained":false,"historicalAffected":[]}],"coverage":[]}