Patch tracker / KB5053636
KB5053636: Windows Server 2019 Security Update (March 2025)
KB5053636 is a High security update for Windows Server 2019, released 2025-03-11. It closes 36 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-2025-24035, which FIRST.org rates at 59% probability of exploitation in the next 30 days.
Update summary
Fixes 36 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.
We checked Microsoft's support article for KB5053636 on 2026-08-11 and it lists no known issues. Read the article before broad deployment; Microsoft adds issues as reports come in, and we re-check on every refresh.
KB5053636 is the March 11, 2025 rollup for Windows 10 version 1809 and Windows Server 2019, closing 36 CVEs. What sets this one apart is that at least one of its flaws is already in the CISA Known Exploited Vulnerabilities catalog and tied to ransomware activity, with a top Severity of High (CVSS 8.8) and an EPSS of 59% signaling active exploitation risk. Server 2019 domain controllers and any lingering 1809 endpoints are the exposed population here.
Do this: Deploy KB5053636 to your Windows Server 2019 and 1809 systems now, prioritizing the KEV-listed CVE given its ransomware linkage.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5053636
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5053636
- 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 KB5053636 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.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2025-24985 | High | 7.8 | 59% | KEV |
| CVE-2025-24993 | High | 7.8 | 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-2025-24997 | High | 8.8 | 59% | No |
| CVE-2025-26645 | High | 8.8 | 59% | No |
| CVE-2025-24084 | High | 8.4 | 59% | 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-2025-24076 | High | 7.3 | 59% | No |
| CVE-2025-24994 | High | 7.3 | 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.