Patch tracker / KB5053599
KB5053599: Windows Server 2019 Security Update (March 2025)
KB5053599 is a High security update for Windows Server 2019, released 2025-03-11. It closes 35 CVEs with a maximum CVSS of 8.8. At least one of them is actively exploited (CISA KEV) and linked to ransomware, so this is a deploy-first update. 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
Take a look before you deploy: this update has a known issue
Microsoft's own support article for KB5053599 documents the following, as of 2026-08-04.
- Citrix
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 KB5053599
KB5053599 is the March 11 2025 rollup for Windows 10 version 1809 and Windows Server 2019, closing 35 CVEs. What stands out here is that at least one flaw is already in the CISA Known Exploited Vulnerabilities catalog with ransomware associations, and the batch peaks at High severity (CVSS 8.8) with an EPSS of 59 percent, meaning active exploitation is a live concern rather than theoretical.
Do this: Deploy KB5053599 to all 1809 and Server 2019 hosts now, prioritizing internet-facing servers given the confirmed KEV and ransomware linkage.
AI-generated from public data, 2026-07-27. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5053599
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5053599
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 35 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 59%. One is linked to ransomware.
Among the top 25% of tracked Microsoft updates by EPSS exploit probability.
What to do
Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. Senserva flags whether KB5053599 is missing on your devices.
Check if KB5053599 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.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5053599 (checked 2026-08-04). Verify against the article before acting.
Citrix
Applies to: IT admins
Symptoms
Devices that have certain Citrix components installed might be unable to complete installation of the January 2025 Windows security update. This issue was observed on devices with Citrix Session Recording Agent (SRA) version 2411. The 2411 version of this application was released in December 2024.
Affected devices might initially download and apply the January 2025 Windows security update correctly, such as via the Windows Update page in Settings. However, when restarting the device to complete the update installation, an error message with text similar to “Something didn’t go as planned. No need to worry – undoing changes” appears. The device will then revert to the Windows updates previously present on the device.
This issue likely affects a limited number of organizations as version 2411 of the SRA application is a new version. Home users are not expected to be affected by this issue.
Workaround
The issue has been resolved in Citrix Session Recording Agent version 2503, released on April 28, 2025, and newer versions.
For details, see the documentation provided by Citrix at " Microsoft's January Security Update Fails/Reverts on a machine with 2411 Session Recording Agent ".
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-2025-24054 | High | 8.8 | 59% | KEV |
| CVE-2025-24984 | High | 8.8 | 59% | KEV |
| CVE-2025-24985 | High | 8.8 | 59% | KEV |
| CVE-2025-24991 | High | 8.8 | 59% | KEV |
| CVE-2025-24993 | High | 8.8 | 59% | KEV |
| CVE-2025-26633 | High | 8.8 | 59% | KEV Ransomware |
| CVE-2024-9157 | High | 8.8 | 59% | No |
| CVE-2025-21180 | High | 8.8 | 59% | No |
| CVE-2025-21247 | High | 8.8 | 59% | No |
| CVE-2025-24035 | High | 8.8 | 59% | No |
| CVE-2025-24044 | High | 8.8 | 59% | No |
| CVE-2025-24045 | High | 8.8 | 59% | No |
| CVE-2025-24046 | High | 8.8 | 59% | No |
| CVE-2025-24048 | High | 8.8 | 59% | No |
| CVE-2025-24050 | High | 8.8 | 59% | No |
| CVE-2025-24051 | High | 8.8 | 59% | No |
| CVE-2025-24055 | High | 8.8 | 59% | No |
| CVE-2025-24056 | High | 8.8 | 59% | No |
| CVE-2025-24059 | High | 8.8 | 59% | No |
| CVE-2025-24061 | High | 8.8 | 59% | No |
| CVE-2025-24064 | High | 8.8 | 59% | No |
| CVE-2025-24066 | High | 8.8 | 59% | No |
| CVE-2025-24067 | High | 8.8 | 59% | No |
| CVE-2025-24071 | High | 8.8 | 59% | No |
| CVE-2025-24072 | High | 8.8 | 59% | No |
| CVE-2025-24076 | High | 8.8 | 59% | No |
| CVE-2025-24084 | High | 8.8 | 59% | No |
| CVE-2025-24987 | High | 8.8 | 59% | No |
| CVE-2025-24988 | High | 8.8 | 59% | No |
| CVE-2025-24992 | High | 8.8 | 59% | No |
| CVE-2025-24995 | High | 8.8 | 59% | No |
| CVE-2025-24996 | High | 8.8 | 59% | No |
| CVE-2025-24997 | High | 8.8 | 59% | No |
| CVE-2025-25008 | High | 8.8 | 59% | No |
| CVE-2025-26645 | High | 8.8 | 59% | No |
Affected products
Also released in March 2025
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.