Critical severity9.8NVD Advisory· Published Sep 8, 2026· Updated Sep 17, 2026
CVE-2026-67643
CVE-2026-67643
Description
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Affected products
1Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67643nvdPatchVendor Advisory
News mentions
4- Microsoft Patch Tuesday for September 2026 — Snort rules and prominent vulnerabilitiesCisco Talos Intelligence · Sep 8, 2026
- Patch Tuesday - September 2026Rapid7 Blog · Sep 8, 2026
- Massive Microsoft Patch Tuesday September 2026 – 973 Vulnerabilities Fixed, Including 2 Zero-DaysCyber Security News · Sep 8, 2026
- September 2026 Patch Tuesday: Two Exploited Zero-Days and 113 Critical Vulnerabilities Among 972 CVEsCrowdStrike Blog