{"id":"CVE-2026-102870","revision":"63d942a7882b45518cd6f082fce2b706","records":[{"revision":"63d942a7882b45518cd6f082fce2b706","observedAt":"2026-10-25T20:02:02.581+00:00","statement":{"source":"cve-program","id":"CVE-2026-102870","aliases":[],"title":"ASP.NET Core Remote Code Execution Vulnerability","description":"Improper control of generation of code ('code injection') in ASP.NET Core allows an unauthorized attacker to execute code over a network.","state":0,"publishedAt":"2026-10-13T19:01:30.882+00:00","modifiedAt":"2026-10-25T18:48:45.328+00:00","affected":[{"ecosystem":"Vendor product","name":".NET 10.0 installed on Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 10.0 installed on Linux\",\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.0\",\n                            \"lessThan\": \"10.0.403\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 10.0 installed on Mac OS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 10.0 installed on Mac OS\",\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.0\",\n                            \"lessThan\": \"10.0.403\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 10.0 installed on Windows","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 10.0 installed on Windows\",\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.0\",\n                            \"lessThan\": \"10.0.403\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 11.0 installed on Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 11.0 installed on Linux\",\n                    \"versions\": [\n                        {\n                            \"version\": \"11.0.0-preview.1\",\n                            \"lessThan\": \"11.0.100-rc.3\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 11.0 installed on Mac OS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 11.0 installed on Mac OS\",\n                    \"versions\": [\n                        {\n                            \"version\": \"11.0.0-preview.1\",\n                            \"lessThan\": \"11.0.100-rc.3\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":".NET 11.0 installed on Windows","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \".NET 11.0 installed on Windows\",\n                    \"versions\": [\n                        {\n                            \"version\": \"11.0.0-preview.1\",\n                            \"lessThan\": \"11.0.100-rc.3\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2019 version 16.11","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2019 version 16.11\",\n                    \"versions\": [\n                        {\n                            \"version\": \"16.11.0\",\n                            \"lessThan\": \"16.11.61\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2022 version 17.14","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2022 version 17.14\",\n                    \"versions\": [\n                        {\n                            \"version\": \"17.14.0\",\n                            \"lessThan\": \"17.14.43\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2026 version 18.10","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2026 version 18.10\",\n                    \"versions\": [\n                        {\n                            \"version\": \"18.10.0\",\n                            \"lessThan\": \"18.10.4\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2026 version 18.11","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2026 version 18.11\",\n                    \"versions\": [\n                        {\n                            \"version\": \"18.11.0\",\n                            \"lessThan\": \"18.11.2\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft Visual Studio 2026 version 18.12","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft Visual Studio 2026 version 18.12\",\n                    \"versions\": [\n                        {\n                            \"version\": \"18.12.0\",\n                            \"lessThan\": \"18.12 Insiders 3\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft.AspNetCore.Components.WebAssembly.DevServer","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft.AspNetCore.Components.WebAssembly.DevServer\",\n                    \"versions\": [\n                        {\n                            \"version\": \"11.0.0-preview.1\",\n                            \"lessThan\": \"10.0.14\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft.AspNetCore.Components.WebAssembly.Server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft.AspNetCore.Components.WebAssembly.Server\",\n                    \"platforms\": [\n                        \".NET 10.0 runtime installed on Linux\",\n                        \".NET 10.0 runtime installed on Mac OS\",\n                        \".NET 10.0 runtime installed on Windows\",\n                        \".NET 11.0 runtime installed on Linux\",\n                        \".NET 11.0 runtime installed on Mac OS\",\n                        \".NET 11.0 runtime installed on Windows\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.0\",\n                            \"lessThan\": \"10.0.13\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":8.8,"severity":"HIGH"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102870"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102870","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102870","identifiers":["CVE-2026-102870"]},"retained":false,"historicalAffected":[]}],"coverage":[]}