Patch tracker / KB5089899

KB5089899

Microsoft security update released 2026-05-12. Fixes 1 CVE.

High

Download KB5089899

Get the official update for KB5089899. The download and file size for each supported product are on the Microsoft Update Catalog page.

Microsoft Update Catalog: download KB5089899 Microsoft support article

Update summary

Released

2026-05-12

CVEs fixed

1

Max CVSS

8.8

Severity

High

Exploitation and severity

Fixes 1 CVE. Most severe CVSS 8.8 (High). EPSS exploit probability up to <1%.

Among the lower half of tracked Microsoft updates by EPSS exploit probability.

What to do

Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5089899 is missing on your devices.

CVEs fixed by this update

Affected products

Microsoft SQL Server 2017 for x64-based Systems (GDR)
Microsoft SQL Server 2022 for x64-based Systems (CU 24)
Microsoft SQL Server 2025 for x64-based Systems (CU4)

References

Microsoft support article Microsoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

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Lexicon: the terms on this page

CVE: Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB: Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV: CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS: Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS: Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC: Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD: National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware: The vulnerability is linked to known ransomware activity.