Patch tracker / KB5053593

KB5053593: Windows Server 2025 Security Update (March 2025)

KB5053593 is a Medium security update for Windows Server 2025, released 2025-03-11. It closes 1 CVE with a maximum CVSS of 4.3. The most likely of them to be attacked is CVE-2025-21247, which FIRST.org rates at 59% probability of exploitation in the next 30 days.

Update summary

Medium

2025-03-11

Released

CVEs fixed

4.3

Max CVSS

Medium

Severity

Deploy this cycle

Fixes 1 CVE for Windows Server 2025. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 4.3 (Medium). EPSS exploit probability up to 3.2%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5053593 Microsoft 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.

I am an IT admin triaging Microsoft updates. Facts for KB5053593 (source: https://senserva.com/kb/5053593.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- Update: KB5053593, Windows Server 2025, released 2025-03-11
- Severity: Medium; fixes 1 CVE, max CVSS 4.3
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2025-21247
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5053593
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

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.

# Is KB5053593 installed? (elevated PowerShell)
Get-HotFix -Id KB5053593 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5053593 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

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-2025-21247	High	8.8	59%	No

Scope and sources

Affected products

Also released in March 2025

Authoritative references

Official KB5053593 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

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

KB5053593: Windows Server 2025 Security Update (March 2025)

Update summary

Full tracking and change history for KB5053593

Check if KB5053593 is installed

CVEs fixed by this update

Scope and sources

KB5051974

KB5051979

KB5051980

KB5051987

KB5051989

KB5052000

KB5052006

KB5052040