Patch tracker / KB5046687
KB5046687: Windows Server 2008 R2 Security Update (November 2024)
KB5046687 is a High security update for Windows Server 2008 R2, released 2024-11-12. It closes 20 CVEs with a maximum CVSS of 8.8. At least one of them is actively exploited (CISA KEV), so it is urgent, and Microsoft lists 1 known issue: test it before broad deployment. 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.
Before you deploy: Microsoft lists 1 known issue for this update.
Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date.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 20 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 84%. Among the top 5% of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Windows Server 2008 R2 for x64-based Systems Service Pack 1 has shipped since this one: KB5073695 (2026-01-13). 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.
- We are currently not aware of any issues with this update. For the most up-to-date information about known issues for Windows Server 2008 R2 SP1,...
KB5046687 covers the November 2024 security rollup for Windows 10 version 1809 and Windows Server 2019, fixing twenty CVEs, one more than some sibling packages for the same release. The headline issue is High severity at CVSS 8.8, is in CISA's Known Exploited Vulnerabilities catalog, and scores 82 percent on EPSS, so exploitation is not theoretical. Legacy Server 2019 boxes kept around for compatibility are exactly the systems attackers expect to find unpatched.
Do this: Roll out KB5046687 to all applicable Windows 10 1809 and Windows Server 2019 systems and verify installation before the next patch cycle.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5046687
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5046687
- Released
- 2024-11-12
- Last changed
- 2026-10-21
- Changes tracked
- 5
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 KB5046687 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5046687 (checked 2026-10-22). Microsoft lists 1 known issue. Verify against the article before acting.
We are currently not aware of any issues with this update. For the most up-to-date information about known issues for Windows Server 2008 R2 SP1, please go to the Windows release health dashboard .
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-2024-43451 | 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-2024-43641 | High | 7.8 | <1% | No |
| CVE-2024-43644 | High | 7.8 | <1% | No |
| CVE-2024-49019 | High | 7.8 | 2.0% | No |
| CVE-2024-49046 | High | 7.8 | <1% | No |
| CVE-2024-43450 | High | 7.5 | <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-2024-38203 | 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.