{"id":"CVE-2026-66816","revision":"2e1c87293b9f4104918ceb624d502faf","records":[{"revision":"2e1c87293b9f4104918ceb624d502faf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-66816","aliases":[],"title":"Microsoft SQL Server Security Feature Bypass Vulnerability","description":"Insufficient logging in SQL Server allows an authorized attacker to bypass a security feature over a network.","state":0,"publishedAt":"2026-09-08T17:14:27.698+00:00","modifiedAt":"2026-10-14T23:09:39.881+00:00","affected":[{"ecosystem":"Vendor product","name":"Microsoft SQL Server 2022 (CU 26)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft SQL Server 2022 (CU 26)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16.0.0.0\",\n                            \"lessThan\": \"16.0.4275.2\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft SQL Server 2022 (GDR)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft SQL Server 2022 (GDR)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"16.0.0\",\n                            \"lessThan\": \"16.0.1200.5\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft SQL Server 2025 (CU8)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft SQL Server 2025 (CU8)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"17.0.0.0\",\n                            \"lessThan\": \"17.0.4085.5\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft SQL Server 2025 for x64-based Systems (GDR)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Microsoft SQL Server 2025 for x64-based Systems (GDR)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"17.0.1050.2\",\n                            \"lessThan\": \"17.0.1135.8\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","score":6.5,"severity":"MEDIUM"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66816"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66816","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-66816","identifiers":["CVE-2026-66816"]},"retained":false,"historicalAffected":[]}],"coverage":[]}