Patch tracker / KB5053594
KB5053594: Windows Server 2019 Security Update (March 2025)
KB5053594 is a High security update for Windows Server 2019, released 2025-03-11. It closes 34 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. The most likely of them to be attacked is CVE-2024-49116, which FIRST.org rates at 83% probability of exploitation in the next 30 days.
Update summary
Fixes 34 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.
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 documents 1 known issue with this update.
- Microsoft is not currently aware of any issues with this update.
KB5053594 fixes thirty four CVEs for Windows 10 version 1809 and Windows Server 2019 in March 2025, combining CVE-2025-24045 and CVE-2025-25008 with the ransomware linked CVE-2025-24035. High severity, CVSS 8.8, a 59 percent EPSS score, CISA KEV listing, and ransomware association all carry through this package. It sits alongside several near identical March updates all tracing back to the same extortion relevant flaw.
Do this: Install KB5053594 to address the ransomware linked vulnerability affecting Windows 10 1809 and Windows Server 2019.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5053594
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5053594
- 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 KB5053594 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5053594 (checked 2026-08-11). Verify against the article before acting.
Microsoft is not currently aware of any issues with this update.
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-2025-24985 | High | 7.8 | 59% | KEV |
| CVE-2025-24993 | High | 7.8 | 59% | KEV |
| CVE-2025-24983 | High | 7.0 | 59% | KEV |
| CVE-2025-26633 | High | 7.0 | 59% | KEV Ransomware |
| CVE-2025-24054 | Medium | 6.5 | 59% | KEV |
| CVE-2025-24991 | Medium | 5.5 | 59% | KEV |
| CVE-2025-24984 | Medium | 4.6 | 59% | KEV |
| CVE-2024-9157 | High | 8.8 | 59% | No |
| CVE-2025-21247 | 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-2025-26645 | High | 8.8 | 59% | No |
| CVE-2024-49116 | High | 8.1 | 83% | No |
| CVE-2025-24035 | High | 8.1 | 59% | No |
| CVE-2025-24045 | High | 8.1 | 59% | No |
| CVE-2025-24064 | High | 8.1 | 59% | No |
| CVE-2025-21180 | High | 7.8 | 59% | No |
| CVE-2025-24044 | High | 7.8 | 59% | No |
| CVE-2025-24046 | High | 7.8 | 59% | No |
| CVE-2025-24048 | High | 7.8 | 59% | No |
| CVE-2025-24050 | High | 7.8 | 59% | No |
| CVE-2025-24059 | High | 7.8 | 59% | No |
| CVE-2025-24061 | High | 7.8 | 59% | No |
| CVE-2025-24066 | High | 7.8 | 59% | No |
| CVE-2025-24067 | High | 7.8 | 59% | No |
| CVE-2025-24072 | High | 7.8 | 59% | No |
| CVE-2025-24995 | High | 7.8 | 59% | No |
| CVE-2025-25008 | High | 7.1 | 59% | No |
| CVE-2025-24987 | Medium | 6.6 | 59% | No |
| CVE-2025-24988 | Medium | 6.6 | 59% | No |
| CVE-2025-24071 | Medium | 6.5 | 59% | No |
| CVE-2025-24996 | Medium | 6.5 | 59% | No |
| CVE-2025-24992 | Medium | 5.5 | 59% | No |
Scope and sources
- Affected products
- Also released in March 2025
KB5051974
32 CVEs · High · exploitedKB5051979
34 CVEs · High · exploitedKB5051980
34 CVEs · High · exploitedKB5051987
38 CVEs · High · exploitedKB5051989
32 CVEs · High · exploitedKB5052000
34 CVEs · High · exploitedKB5052006
33 CVEs · High · exploitedKB5052040
27 CVEs · High · exploitedThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.