SQL Server Untrusted Pointer Dereference Remote Code Execution
Severe, but no confirmed exploitation yet. Schedule remediation in your next patch cycle and apply mitigations if you're exposed.
An unauthenticated attacker, remotely over the network, with no user interaction, can fully compromise the system — steal data, tamper with it and take it offline.
Untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.
Inferred from the weakness type (CWE) and how the flaw is reached — the techniques an attacker would chain to exploit this. Real-world corroboration appears here as threat intel is folded in.
Generated by Wavense from the CVE record — an immediate mitigation and the permanent fix.
Implement strict network segmentation and firewall rules to restrict access to SQL Server ports (e.g., TCP 1433) only from trusted hosts and applications. Enforce the principle of least privilege for SQL Server service accounts and disable any unnecessary features or components. Implement enhanced monitoring for unusual activity or unauthorized connection attempts to SQL Server instances.
Apply the vendor-provided security patches immediately for all affected SQL Server versions to address the untrusted pointer dereference vulnerability. Regularly check the official Microsoft security bulletins and update guides for specific patch releases related to CVE-2026-67378. Ensure that all SQL Server instances are updated to the latest secure version to prevent exploitation.
An unauthorized attacker can remotely execute arbitrary code with SYSTEM privileges on the affected SQL Server instance. This can lead to complete server compromise, including data theft, manipulation, or destruction, and could disrupt critical business operations, resulting in significant financial and reputational damage.
Other CVEs affecting sql server 2019
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
Out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.