{"id":"CVE-2026-78456","title":"Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.","summary":"Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"microsoft","product":"sql_server_2022","affected":["sql_server_2022 < 16.0.1200.5","sql_server_2022 >= 16.0.4003.1, < 16.0.4275.2"],"patched":["sql_server_2022 16.0.4275.2"],"published":"2026-09-08","updated":"2026-09-15","sourceUpdated":"2026-09-15T14:55:45.910","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78456","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78456","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00852,"epssPercentile":0.56722,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:26:37.436763Z"},"ingestedAt":"2026-09-08T19:08:49.629Z","slug":"CVE-2026-78456","body":"## Overview\n\nHeap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.\n\n## Affected\n\n- `sql_server_2022 < 16.0.1200.5`\n- `sql_server_2022 >= 16.0.4003.1, < 16.0.4275.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `sql_server_2022 16.0.4275.2`","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}