CVE-2024-49021 Microsoft SQL Server Remote Code Execution Vulnerability

High 7.8 Published 12 Nov 2024 Updated 8 Jul 2025

An attacker can execute arbitrary code on Microsoft SQL Server due to a use-after-free vulnerability.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-49021?

CVE-2024-49021 is a high-severity use after free vulnerability in Microsoft Sql Server 2016, published on 12 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Microsoft SQL Server Remote Code Execution Vulnerability

Weakness: CWE-416

Which versions are affected by CVE-2024-49021?

It affects 4 products.

Products include Microsoft Sql Server 2016, Microsoft Sql Server 2017, Microsoft Sql Server 2019, Microsoft Sql Server 2022.

How do I fix CVE-2024-49021?

No fix has been published for CVE-2024-49021 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-49021 being exploited?

There is no known exploitation of CVE-2024-49021 in the wild and no public exploit code.

All Microsoft Sql Server 2016 vulnerabilities

Sources

Also known as GHSA-j85c-4frx-f93r.