Patch tracker / KB5046617
KB5046617: Windows Server 2019 Security Update (November 2024)
KB5046617 is a Critical security update for Windows Server 2019, released 2024-11-12. It closes 33 CVEs with a maximum CVSS of 9.8. 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-2024-43623, which FIRST.org rates at 82% probability of exploitation in the next 30 days.
Update summary
Fixes 33 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 82%. One is linked to ransomware. Among the top 10% 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.
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KB5046617 is the November 12, 2024 rollup for Windows 10 1809 and Windows Server 2019, closing 33 CVEs including one rated Critical at CVSS 9.8. What sets this batch apart is that at least one flaw is already in the CISA KEV catalog and linked to ransomware activity, with an EPSS of 82 percent indicating high likelihood of exploitation. Any unpatched 1809 or Server 2019 host, especially internet-facing servers, is exposed right now.
Do this: Deploy KB5046617 to all Windows 10 1809 and Windows Server 2019 systems immediately, prioritizing internet-facing and domain-critical servers given the KEV-listed, ransomware-linked CVE.
AI-generated from public data, 2026-07-27. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5046617
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5046617
- Released
- 2024-11-12
- Last changed
- 2024-11-12
- 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 KB5046617 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5046617 (checked 2026-08-11). Verify against the article before acting.
|
| Applies to
| Symptom
| Workaround
| All users
| We’re aware of an issue where players on Arm devices are unable to download and play Roblox via the Microsoft Store on Windows.
| Players on Arm devices can play Roblox by downloading the title directly from www.Roblox.com .
| All users
| Following the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections. The service fails with no detailed logging, and manual intervention is required to run the sshd.exe process.This issue is affecting both enterprise, IOT, and education customers, with a limited number of devices impacted. Microsoft is investigating whether consumer customers using Home or Pro editions of Windows are affected.
| This issue is addressed in KB5052093 .
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-2024-49039 | High | 8.8 | 82% | KEV Ransomware |
| CVE-2024-43451 | Medium | 6.5 | 82% | KEV |
| CVE-2024-43639 | Critical | 9.8 | 82% | No |
| CVE-2024-43620 | High | 8.8 | 82% | No |
| CVE-2024-43621 | High | 8.8 | 82% | No |
| CVE-2024-43622 | High | 8.8 | 82% | No |
| CVE-2024-43624 | High | 8.8 | 82% | No |
| CVE-2024-43627 | High | 8.8 | 82% | No |
| CVE-2024-43628 | High | 8.8 | 82% | No |
| CVE-2024-43635 | High | 8.8 | 82% | No |
| CVE-2024-43625 | High | 8.1 | 82% | No |
| CVE-2024-43623 | High | 7.8 | 82% | No |
| CVE-2024-43626 | High | 7.8 | 82% | No |
| CVE-2024-43629 | High | 7.8 | 82% | No |
| CVE-2024-43630 | High | 7.8 | 82% | No |
| CVE-2024-43636 | High | 7.8 | 82% | No |
| CVE-2024-43641 | High | 7.8 | 82% | No |
| CVE-2024-43644 | High | 7.8 | 82% | No |
| CVE-2024-49019 | High | 7.8 | 82% | No |
| CVE-2024-49046 | High | 7.8 | 82% | No |
| CVE-2024-43450 | High | 7.5 | 82% | No |
| CVE-2024-43452 | High | 7.5 | 82% | No |
| CVE-2024-43642 | High | 7.5 | 82% | No |
| CVE-2024-43449 | Medium | 6.8 | 82% | No |
| CVE-2024-43634 | Medium | 6.8 | 82% | No |
| CVE-2024-43637 | Medium | 6.8 | 82% | No |
| CVE-2024-43638 | Medium | 6.8 | 82% | No |
| CVE-2024-43643 | Medium | 6.8 | 82% | No |
| CVE-2024-43631 | Medium | 6.7 | 82% | No |
| CVE-2024-43646 | Medium | 6.7 | 82% | No |
| CVE-2024-43633 | Medium | 6.5 | 82% | No |
| CVE-2024-38203 | Medium | 6.2 | 82% | No |
| CVE-2024-38264 | Medium | 5.9 | 82% | No |
Scope and sources
- Affected products
- Also released in November 2024
KB5046612
27 CVEs · Critical · exploitedKB5046615
31 CVEs · Critical · exploitedKB5046616
37 CVEs · Critical · exploitedKB5046618
35 CVEs · Critical · exploitedKB5046682
22 CVEs · Critical · exploitedKB5046696
36 CVEs · Critical · exploitedKB5046698
37 CVEs · Critical · exploitedKB5046613
31 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.