CVE-2026-68787 Microsoft SQL Server Remote Code Execution Vulnerability

High 7.8 Published 8 Sep 2026 Updated 14 Oct 2026

An authorized attacker can execute code locally via a heap-based buffer overflow in Microsoft SQL Server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-68787?

CVE-2026-68787 is a high-severity memory corruption vulnerability in Microsoft Sql Server 2017, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally.

Weakness: CWE-122

Which versions are affected by CVE-2026-68787?

It affects 4 products.

Products include Microsoft Sql Server 2017, Microsoft Sql Server 2019, Microsoft Sql Server 2022, Microsoft Sql Server 2025.

How do I fix CVE-2026-68787?

No fix has been published for CVE-2026-68787 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-68787 being exploited?

There is no known exploitation of CVE-2026-68787 in the wild and no public exploit code.

All Microsoft Sql Server 2017 vulnerabilities

Sources

Also known as GHSA-gprc-3mvx-rhh8.