Patch tracker / KB5068781

KB5068781: Windows Server 2019 Security Update (December 2025)

KB5068781 is a Critical security update for Windows Server 2019, released 2025-12-09. It closes 33 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. The most likely of them to be attacked is CVE-2025-64678, which FIRST.org rates at 6% probability of exploitation in the next 30 days.

Update summary

CriticalCISA KEV

2025-12-09

Released

CVEs fixed

9.8

Max CVSS

Critical

Severity

Deploy now

This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 33 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 6.0%. 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 10 Version 1809 for 32-bit Systems has shipped since this one: KB5094041 (2026-08-11). 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 KB5068781 Microsoft support article

Senserva AI Opinion for KB5068781

KB5068781 is the December 9, 2025 rollup for Windows 10 version 1809 and Windows Server 2019, closing 33 CVEs including one rated Critical at CVSS 9.8 and at least one already listed in the CISA Known Exploited Vulnerabilities catalog. The confirmed exploitation matters more than the modest 6 percent peak EPSS: attackers are using at least one of these flaws in the wild even though none are currently tied to ransomware campaigns. Windows Server 2019 domain infrastructure and legacy 1809 fleets are the exposed population here.

Do this: Deploy KB5068781 to your Windows Server 2019 and 1809 systems now, prioritizing internet-facing and domain-joined servers because of the KEV-listed CVE.

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

Senserva AI Opinion and rich prompt for KB5068781

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 KB5068781 (source: https://senserva.com/kb/5068781.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- Update: KB5068781, Windows Server 2019, released 2025-12-09
- Severity: Critical; fixes 33 CVEs, max CVSS 9.8
- Actively exploited (CISA KEV): YES
- CVEs include: CVE-2025-59505, CVE-2025-59506, CVE-2025-59507, CVE-2025-59508, CVE-2025-59509, CVE-2025-59510, CVE-2025-59511, CVE-2025-59512 and 25 more
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5068781
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 KB5068781

Released: 2025-12-09
Last changed: 2025-12-09
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 KB5068781 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5068781 installed? (elevated PowerShell)
Get-HotFix -Id KB5068781 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5068781 -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-2025-62215	High	7.0	6.0%	KEV
CVE-2025-60724	Critical	9.8	6.0%	No
CVE-2025-64678	High	8.8	6.0%	No
CVE-2025-60715	High	8.0	6.0%	No
CVE-2025-62452	High	8.0	6.0%	No
CVE-2025-59505	High	7.8	6.0%	No
CVE-2025-59511	High	7.8	6.0%	No
CVE-2025-59512	High	7.8	6.0%	No
CVE-2025-59514	High	7.8	6.0%	No
CVE-2025-60703	High	7.8	6.0%	No
CVE-2025-60705	High	7.8	6.0%	No
CVE-2025-60707	High	7.8	6.0%	No
CVE-2025-60709	High	7.8	6.0%	No
CVE-2025-60714	High	7.8	6.0%	No
CVE-2025-60720	High	7.8	6.0%	No
CVE-2025-60704	High	7.5	6.0%	No
CVE-2025-59506	High	7.0	6.0%	No
CVE-2025-59507	High	7.0	6.0%	No
CVE-2025-59508	High	7.0	6.0%	No
CVE-2025-59515	High	7.0	6.0%	No
CVE-2025-60716	High	7.0	6.0%	No
CVE-2025-60717	High	7.0	6.0%	No
CVE-2025-60719	High	7.0	6.0%	No
CVE-2025-62213	High	7.0	6.0%	No
CVE-2025-62217	High	7.0	6.0%	No
CVE-2025-62218	High	7.0	6.0%	No
CVE-2025-62219	High	7.0	6.0%	No
CVE-2025-60708	Medium	6.5	6.0%	No
CVE-2025-60723	Medium	6.3	6.0%	No
CVE-2025-59509	Medium	5.5	6.0%	No
CVE-2025-59510	Medium	5.5	6.0%	No
CVE-2025-59513	Medium	5.5	6.0%	No
CVE-2025-60706	Medium	5.5	6.0%	No

Scope and sources

Affected products

Also released in December 2025

Authoritative references

Official KB5068781 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.

KB5068781: Windows Server 2019 Security Update (December 2025)

Update summary

Full tracking and change history for KB5068781

Check if KB5068781 is installed

CVEs fixed by this update

Scope and sources

KB5066586

KB5066780

KB5066782

KB5066791

KB5066793

KB5066835

KB5068779

KB5068787