{"id":"CVE-2026-94520","aliases":["EUVD-2026-100620","GHSA-vxwq-jqhm-w2r6"],"status":"published","title":"Microsoft SQL Server Denial of Service Vulnerability","description":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00844,"percentile":0.58448,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-134"],"published":"2026-10-13T20:37:27Z","modified":"2026-11-10T20:44:31Z","products":[{"vendor":"microsoft","product":"microsoft sql server 2017 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2017 for x64-based systems (cu31)"},{"vendor":"microsoft","product":"microsoft sql server 2019 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2019 for x64-based systems (cu32)"},{"vendor":"microsoft","product":"microsoft sql server 2022 (gdr)"},{"vendor":"microsoft","product":"microsoft sql server 2022 for x64-based systems (cu27)"},{"vendor":"microsoft","product":"microsoft sql server 2025 cu10"},{"vendor":"microsoft","product":"microsoft sql server 2025 for x64-based systems (cu9)"},{"vendor":"microsoft","product":"microsoft sql server 2025 for x64-based systems (gdr)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94520","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94520"},{"url":"https://github.com/advisories/GHSA-vxwq-jqhm-w2r6"}],"sources":{"cve":[{"id":"CVE-2026-94520","title":"Microsoft SQL Server Denial of Service Vulnerability","description":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-10-13T20:37:27.748Z","modified":"2026-11-10T20:44:31.756Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-134"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-100620","description":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-10-13T20:37:27Z","modified":"2026-11-10T20:44:31Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:56.642439Z"}],"ghsa":[{"id":"GHSA-vxwq-jqhm-w2r6","title":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny...","description":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-10-13T21:37:34Z","modified":"2026-10-13T21:37:41Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T15:13:22.12395Z"}],"nvd":[{"id":"CVE-2026-94520","description":"Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-10-13T21:19:58.337Z","modified":"2026-11-10T21:21:46.71Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-134"],"updated_at":"2026-11-11T00:21:50.862051Z"}]}}