CVE-2026-26115 SQL Server Elevation of Privilege Vulnerability

High 8.8 Published 10 Mar 2026 Updated 19 Jun 2026

An authorized attacker can elevate privileges over the network due to improper input validation in Microsoft SQL Server.

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-2026-26115?

CVE-2026-26115 is a high-severity vulnerability in Microsoft Sql Server 2016, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper validation of specified type of input in SQL Server allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-1287

Which versions are affected by CVE-2026-26115?

It affects 5 products.

Products include Microsoft Sql Server 2016, Microsoft Sql Server 2017, Microsoft Sql Server 2019, Microsoft Sql Server 2022, Microsoft Sql Server 2025.

How do I fix CVE-2026-26115?

No fix has been published for CVE-2026-26115 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-26115 being exploited?

There is no known exploitation of CVE-2026-26115 in the wild and no public exploit code.

All Microsoft Sql Server 2016 vulnerabilities

Sources

Also known as GHSA-xjf9-64j8-5qjg.