Patch tracker / KB5046665
KB5046665: Windows 10 Security Update (November 2024)
KB5046665 is a High security update for Windows 10, released 2024-11-12. It closes 21 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-2024-43451, which FIRST.org rates at 84% probability of exploitation in the next 30 days.
Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.
Update summary
Fixes 21 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 84%. One is linked to ransomware. Among the top 5% of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Windows 10 for 32-bit Systems has shipped since this one: KB5066837 (2025-10-14). 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 KB5046665 on 2026-11-03 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.
KB5046665 is the November 2024 rollup for Windows 10 version 1809 and Windows Server 2019, fixing 23 CVEs. One of these is on the CISA Known Exploited Vulnerabilities list and is linked to ransomware use, and the batch peaks at High severity (CVSS 8.8) with an EPSS exploit probability of 82 percent. Domain controllers and legacy 1809 endpoints still in service are directly exposed.
Do this: Deploy KB5046665 to all Windows Server 2019 and Windows 10 1809 systems now, prioritizing domain controllers and internet-facing hosts given the KEV-listed, ransomware-linked CVE.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5046665
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5046665
- Released
- 2024-11-12
- Last changed
- 2026-10-21
- Changes tracked
- 12
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.
Microsoft revised KB5046665 on 2026-10-10: CVEs fixed 23 to 21.
- 2026-10-03 CVEs fixed 23 to 21
- 2026-10-05 CVEs fixed 21 to 23
- 2026-10-10 CVEs fixed 23 to 21
Recorded by Senserva on the dates shown, from the MSRC release feed. This is what moved and when, which neither the vendor advisory nor NVD publishes.
Check if KB5046665 is installed
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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 | 14% | KEV Ransomware |
| CVE-2024-43451 | Medium | 6.5 | 84% | KEV |
| CVE-2024-43620 | High | 8.8 | 1.6% | No |
| CVE-2024-43621 | High | 8.8 | 1.6% | No |
| CVE-2024-43622 | High | 8.8 | 1.6% | No |
| CVE-2024-43627 | High | 8.8 | 1.7% | No |
| CVE-2024-43628 | High | 8.8 | 1.7% | No |
| CVE-2024-43635 | High | 8.8 | 1.7% | No |
| CVE-2024-43623 | High | 7.8 | 4.5% | No |
| CVE-2024-43626 | High | 7.8 | <1% | No |
| CVE-2024-43636 | High | 7.8 | <1% | No |
| CVE-2024-43641 | High | 7.8 | <1% | No |
| CVE-2024-43644 | High | 7.8 | <1% | No |
| CVE-2024-49046 | High | 7.8 | <1% | No |
| CVE-2024-43449 | Medium | 6.8 | <1% | No |
| CVE-2024-43634 | Medium | 6.8 | <1% | No |
| CVE-2024-43637 | Medium | 6.8 | <1% | No |
| CVE-2024-43638 | Medium | 6.8 | <1% | No |
| CVE-2024-43643 | Medium | 6.8 | <1% | No |
| CVE-2024-43645 | Medium | 6.7 | <1% | No |
| CVE-2024-38203 | Medium | 6.2 | <1% | No |
Scope and sources
- Affected products
- Also released in November 2024
KB5046612
25 CVEs · Critical · exploitedKB5046615
28 CVEs · Critical · exploitedKB5046616
34 CVEs · Critical · exploitedKB5046617
33 CVEs · Critical · exploitedKB5046618
32 CVEs · Critical · exploitedKB5046682
22 CVEs · Critical · exploitedKB5046696
33 CVEs · Critical · exploitedKB5046698
34 CVEs · Critical · 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.