Description
Stack-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
Affected products
microsoft: sql server 2017; microsoft: sql server 2019; microsoft: sql server 2022; microsoft: sql server 2025
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96956 PatchVendor Advisory
Metrics
- CVSS 3.1
-
8.0
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 49 · as of 11 November 2026
- CWE
- CWE-121
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.