CVE-2026-88084 Microsoft SQL Server Denial of Service Vulnerability
An authorized attacker can cause a denial of service in Microsoft SQL Server by exploiting resource allocation limits.
- 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-2026-88084?
CVE-2026-88084 is a medium-severity denial of service vulnerability in Microsoft SQL Server 2019 (GDR), published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.
Weakness: CWE-770
Which versions are affected by CVE-2026-88084?
How do I fix CVE-2026-88084?
No fix has been published for CVE-2026-88084 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-88084 being exploited?
There is no known exploitation of CVE-2026-88084 in the wild and no public exploit code.
Sources
Also known as GHSA-4xm6-5gj3-36m5.