CVE-2026-66818

An out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.

An untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.

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.

A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.

A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.

Stack-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.

Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network. An attacker could exploit this to disrupt service availability.

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally. An attacker could exploit this to run arbitrary code in the context of the SQL Server process.

Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over an adjacent network. An attacker could exploit this to access sensitive data.

Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges locally. The vulnerability resides in the database component and requires prior access to the system.