Patch tracker / KB5073177
KB5073177: Microsoft SQL Server 2022 for x64-base Security Update (January 2026)
KB5073177 is a High security update for Microsoft SQL Server 2022 for x64-base, released 2026-01-13. It closes 1 CVE with a maximum CVSS of 7.2. Get it from the Microsoft Update Catalog below, and see where it sits against the rest of the month on the patch tracker.
Update summary
New to these terms? How the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Senserva AI Opinion for KB5073177
KB5073177 patches CVE-2026-20803, a single High severity flaw (CVSS 7.2) spanning SQL Server 2022 GDR, SQL Server 2025 GDR, and SQL Server 2022 CU 22. The EPSS is only 1 percent and it is not in CISA KEV nor ransomware-linked, so this is a moderate-priority fix rather than an emergency. Exposure is limited to organizations running these specific SQL Server 2022 and 2025 x64 builds.
Do this: Identify which SQL Server 2022 and 2025 instances are on GDR versus CU 22 servicing, then apply the matching KB5073177 package during your next maintenance window.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5073177
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5073177
Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.
Exploitation and severity
Fixes 1 CVE. Most severe CVSS 7.2 (High). EPSS exploit probability up to 1.2%.
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 KB5073177 is missing on your devices.
Check if KB5073177 is installed
Copy-paste PowerShell: one machine, or your whole estate in one pass. No output means the update is not installed.
Get-HotFix covers Windows updates. Office, SharePoint, and Exchange server updates show under installed updates in Programs and Features, or check the Update Catalog history.
CVEs fixed by this update
Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2026-20803 | High | 7.2 | 1.2% | No |
Affected products
Also released in January 2026
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.