CVE-2026-88086

Microsoft SQL Server Information Disclosure Vulnerability

CVE-2026-88086 is fixed in 6 products on 1 platform, first by KB5128494, released October 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.3

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

30th percentile

<p>Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over an adjacent network.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft SQL Server 2019 for x64-based Systems (CU32)	KB5128494	Oct 13, 2026
Microsoft SQL Server 2019 for x64-based Systems (GDR)	KB5128495	Oct 13, 2026
Microsoft SQL Server 2022 for x64-based Systems (CU27)	KB5126934	Oct 13, 2026
Microsoft SQL Server 2022 for x64-based Systems (GDR)	KB5128493	Oct 13, 2026
Microsoft SQL Server 2025 for x64-based Systems (CU9)	KB5126967	Oct 13, 2026
Microsoft SQL Server 2025 for x64-based Systems (GDR)	KB5128492	Oct 13, 2026

Details

Published
October 13, 2026
Weakness
Out-of-bounds Read
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88086

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2026-88086">CVE-2026-88086 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.