CVE-2025-55227 Microsoft SQL Server Elevation of Privilege Vulnerability

High 8.8 Published 9 Sep 2025 Updated 20 Feb 2026

An authorized attacker can execute arbitrary commands to elevate privileges in Microsoft SQL Server via network access.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-55227?

CVE-2025-55227 is a high-severity command injection vulnerability in Microsoft Sql Server 2016, published on 9 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper neutralization of special elements used in a command ('command injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-77

Which versions are affected by CVE-2025-55227?

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-2025-55227?

No fix has been published for CVE-2025-55227 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2025-55227 being exploited?

There is no known exploitation of CVE-2025-55227 in the wild and no public exploit code.

All Microsoft Sql Server 2016 vulnerabilities

Sources

Also known as GHSA-8mmr-rphh-45c7.