CVE-2026-67636
CriticalCVSS 9.0Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
An out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.
Risk Assessment
An attacker could remotely execute arbitrary code in the SQL Server process context, potentially leading to full database server compromise and data access.
Recommendation
Apply the available security updates for SQL Server as soon as possible and restrict network access to database instances.
Other vulnerabilities in SQL Server
See all- CVE-2026-67378Critical
An untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-65669Critical
Improper neutralization of special elements in output used by a downstream component ('injection') in SQL Server allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-54118Critical
A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.
- CVE-2026-54117Critical
A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.
- CVE-2026-78456High
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-77488Medium
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- CVE-2026-77487High
SQL Server has improper access control that allows an authorized attacker to elevate privileges over a network.
- CVE-2026-77486High
SQL Server has an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code over a network.
- CVE-2026-77485High
SQL Server has a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
- CVE-2026-77484High
SQL Server has a deserialization of untrusted data vulnerability that allows an authorized attacker to execute code over a network.
Original NVD description (English source)
Out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.