Patch tracker / KB5053593

KB5053593: Windows Server 2012 R2 Security Update (March 2025)

KB5053593 is a Medium security update for Windows Server 2012 R2, released 2025-03-11. It closes 1 CVE with a maximum CVSS of 4.3. It is the 21st largest of the 25 updates Microsoft shipped that month, by CVEs closed.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.

Update summary

Medium
2025-03-11
Released
1
CVEs fixed
4.3
Max CVSS v3
Medium
Severity
Deploy this cycle
Fixes 1 CVE for Windows Server 2012 R2. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 4.3 (Medium). EPSS exploit probability up to 3.0%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for Windows Server 2008 for 32-bit Systems Service Pack 2 has shipped since this one: KB5073697 (2026-01-13). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.

Microsoft Update Catalog: download KB5053593Microsoft support article
Senserva AI Opinion for KB5053593

This March 2025 update fixes a single Medium Severity issue, CVE-2025-21247, rated CVSS 4.3, on Windows Server 2025 including the Server Core option. It is the lowest-severity item in this batch, and a 3 percent EPSS reflects that lower urgency, but it still belongs in the standard Server 2025 patch cadence. No KEV or ransomware association exists.

Do this: Include KB5053593 in the normal Windows Server 2025 patch cycle without treating it as urgent out-of-band work.

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

Senserva AI Opinion and rich prompt for KB5053593

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

Full tracking and change history for KB5053593

Released
2025-03-11
Last changed
2025-03-11
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 KB5053593 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-2025-21247Medium4.33.1%No

Scope and sources

Affected products
Also released in March 2025

KB5053594

34 CVEs · High · exploited

KB5053596

33 CVEs · High · exploited

KB5053598

36 CVEs · High · exploited

KB5053599

35 CVEs · High · exploited

KB5053602

33 CVEs · High · exploited

KB5053603

34 CVEs · High · exploited

KB5053606

30 CVEs · High · exploited

KB5053618

28 CVEs · High · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5053593 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.
All information provided as is, without warranty; verify against the vendor advisory before acting. All information and usage is subject to the Senserva EULA. Data notice and terms.