CVE-2026-67643
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk56th percentile - higher than 56% of all known CVEs
Summary
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Risk Assessment
An attacker could remotely execute arbitrary code on the database server, potentially leading to full system and data compromise.
Recommendation
Apply available security updates for SQL Server and restrict network access to database instances.
Other vulnerabilities in Microsoft SQL Server
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Microsoft SQL Server 2016 does not properly perform a cast of an unspecified pointer, allowing remote authenticated users to gain privileges via unknown vectors.
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Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
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Original NVD description (English source)
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.