Description
Out-of-bounds read in SQL Server allows an authorized attacker to deny service 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-2026-67633 Vendor AdvisoryPatch
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 67 · as of 3 November 2026
- CWE
- CWE-125
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.