{"id":"CVE-2026-67633","aliases":["EUVD-2026-73186","GHSA-c5hp-67h3-xjp7"],"status":"published","title":"Microsoft SQL Server Denial of Service Vulnerability","description":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01138,"percentile":0.66843,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-09-08T17:10:44Z","modified":"2026-11-10T21:29:23Z","products":[{"vendor":"microsoft","product":"microsoft sql server 2017 (cu 31)"},{"vendor":"microsoft","product":"microsoft sql server 2017 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2019 (cu 32)"},{"vendor":"microsoft","product":"microsoft sql server 2019 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2022 (cu 26)"},{"vendor":"microsoft","product":"microsoft sql server 2022 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2025 (cu8)"},{"vendor":"microsoft","product":"microsoft sql server 2025 for x64-based systems (gdr)"},{"vendor":"microsoft","product":"sql_server_2017"},{"vendor":"microsoft","product":"sql_server_2019"},{"vendor":"microsoft","product":"sql_server_2022"},{"vendor":"microsoft","product":"sql_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67633","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67633"},{"url":"https://github.com/advisories/GHSA-c5hp-67h3-xjp7"}],"sources":{"cve":[{"id":"CVE-2026-67633","title":"Microsoft SQL Server Denial of Service Vulnerability","description":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:10:44.233Z","modified":"2026-11-10T21:29:23.112Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-73186","description":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:10:44Z","modified":"2026-11-10T21:29:23Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:53.990018Z"}],"ghsa":[{"id":"GHSA-c5hp-67h3-xjp7","title":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","description":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:32:10Z","modified":"2026-09-08T18:32:11Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:11:29.303164Z"}],"nvd":[{"id":"CVE-2026-67633","description":"Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:18:23.753Z","modified":"2026-09-16T13:01:52.04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:44.436435Z"}]}}