Patch tracker / KB5073031

KB5073031: Microsoft SQL Server 2022 for x64-base Security Update (January 2026)

KB5073031 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. It is the 23rd largest of the 40 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2026-01-13
Released
1
CVEs fixed
7.2
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 1 CVE for Microsoft SQL Server 2022 for x64-base. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.2 (High). EPSS exploit probability up to 1.3%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5073031Microsoft support article
Senserva AI Opinion for KB5073031

KB5073031 patches a single flaw, CVE-2026-20803, across three SQL Server servicing branches: SQL Server 2022 and 2025 GDR plus the SQL Server 2022 CU 22 cumulative track. Severity is rated High at CVSS 7.2, but EPSS sits at 1 percent with no CISA KEV listing or ransomware association. Exposure is limited to organizations running these specific SQL Server versions, and the branch split matters because you must apply the update that matches your existing patch train.

Do this: Identify whether each SQL Server 2022/2025 instance is on the GDR or CU 22 branch and apply the matching KB5073031 package so you stay on the correct servicing path.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5073031

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5073031

Released
2026-01-13
Last changed
2026-01-13
Changes tracked
1

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.

Check if KB5073031 is installed

Elevated PowerShell. No output means it is not installed.

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.

CVESeverityCVSSEPSSExploited
CVE-2026-20803High7.21.3%No

Scope and sources

Affected products
Also released in January 2026

KB5002822

6 CVEs · Critical · exploited

KB5002825

7 CVEs · Critical · exploited

KB5002828

7 CVEs · Critical · exploited

KB5073379

86 CVEs · Critical · exploited

KB5073450

80 CVEs · Critical · exploited

KB5073455

80 CVEs · Critical · exploited

KB5073457

78 CVEs · Critical · exploited

KB5073722

54 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5073031 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

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

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.