{"id":"CVE-2026-96958","revision":"34f0c3fe3b354d0dabc09410952b1c62","records":[{"revision":"34f0c3fe3b354d0dabc09410952b1c62","observedAt":"2026-10-23T23:48:20.643+00:00","statement":{"source":"cve-program","id":"CVE-2026-96958","aliases":[],"title":".NET Denial of Service Vulnerability","description":"Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.","state":0,"publishedAt":"2026-10-13T19:01:27.223+00:00","modifiedAt":"2026-10-23T22:31:08.025+00:00","affected":[{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 3.5","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 3.5\",\n                    \"platforms\": [\n                        \"Windows 11 version 26H1\",\n                        \"Windows Server 2012\",\n                        \"Windows Server 2012 R2\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.5.0\",\n                            \"lessThan\": \"2.0.50727.9188 AND 3.0.30729.9171\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2\",\n                    \"platforms\": [\n                        \"Windows 10 version 1607\",\n                        \"Windows Server 2016\",\n                        \"Windows Server 2019\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0.0.0\",\n                            \"lessThan\": \"2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 3.5 AND 4.7.2","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 3.5 AND 4.7.2\",\n                    \"platforms\": [\n                        \"Windows 10 version 1809\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.7.0\",\n                            \"lessThan\": \"2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 3.5 AND 4.8","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 3.5 AND 4.8\",\n                    \"platforms\": [\n                        \"Windows 10 version 1809\",\n                        \"Windows 10 version 21H2\",\n                        \"Windows 10 version 22H2\",\n                        \"Windows Server 2019\",\n                        \"Windows Server 2022\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8.0\",\n                            \"lessThan\": \"2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 3.5 AND 4.8.1","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 3.5 AND 4.8.1\",\n                    \"platforms\": [\n                        \"Windows 10 version 21H2\",\n                        \"Windows 10 version 22H2\",\n                        \"Windows 11 version 23H2\",\n                        \"Windows 11 version 24H2\",\n                        \"Windows 11 version 25H2\",\n                        \"Windows 11 version 26H2\",\n                        \"Windows Server 2022\",\n                        \"Windows Server 2025\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8.1\",\n                            \"lessThan\": \"2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2\",\n                    \"platforms\": [\n                        \"Windows Server 2012\",\n                        \"Windows Server 2012 R2\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.7.0\",\n                            \"lessThan\": \"4.7.4150.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 4.8","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 4.8\",\n                    \"platforms\": [\n                        \"Windows 10 version 1607\",\n                        \"Windows Server 2012\",\n                        \"Windows Server 2012 R2\",\n                        \"Windows Server 2016\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8.0\",\n                            \"lessThan\": \"4.8.4811.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft .NET Framework 4.8.1","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft .NET Framework 4.8.1\",\n                    \"platforms\": [\n                        \"Windows 11 version 26H1\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8.0.0\",\n                            \"lessThan\": \"4.8.9363.0\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"System.Security.Cryptography.Xml","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"System.Security.Cryptography.Xml\",\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                        \".NET 8.0 runtime installed on Linux\",\n                        \".NET 8.0 runtime installed on Mac OS\",\n                        \".NET 8.0 runtime installed on Windows\",\n                        \".NET 9.0 runtime installed on Linux\",\n                        \".NET 9.0 runtime installed on Mac OS\",\n                        \".NET 9.0 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:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","score":7.5,"severity":"HIGH"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96958"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-96958","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-96958","identifiers":["CVE-2026-96958"]},"retained":false,"historicalAffected":[]}],"coverage":[]}