CVE-2026-55002 Microsoft SQL Server Elevation of Privilege Vulnerability

High 8.8 Published 14 Jul 2026 Updated 28 Oct 2026

An authorized attacker can exploit external control of file paths in Microsoft SQL Server to elevate privileges over the network.

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-2026-55002?

CVE-2026-55002 is a high-severity path traversal vulnerability in Microsoft Sql Server 2016, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

External control of file name or path in SQL Server allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-73

Which versions are affected by CVE-2026-55002?

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-2026-55002?

No fix has been published for CVE-2026-55002 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-55002 being exploited?

There is no known exploitation of CVE-2026-55002 in the wild and no public exploit code.

All Microsoft Sql Server 2016 vulnerabilities

Sources

Also known as GHSA-84xv-35h8-r47j.