CVE-2026-67643Critical· 9.8▾ MidnightHeap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.2 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 10.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.8%
Last analysed / modified upstream
8.8 → 9.8
high → critical
0.8% → 1.0%
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
sql_server_2022 < 16.0.1200.5sql_server_2022 >= 16.0.4003.1, < 16.0.4275.2sql_server_2025 < 17.0.1135.8sql_server_2025 >= 17.0.4006.2, < 17.0.4085.5Upgrade past the affected range:
sql_server_2022 16.0.4275.2sql_server_2025 17.0.4085.5Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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