Patch tracker / KB5072033
KB5072033: Windows 10 Version 1809 for 32-bit Sys Security Update (December 2025)
KB5072033 is a High security update for Windows 10 Version 1809 for 32-bit Sys, released 2025-12-09. 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. It is the 11th largest of the 59 updates Microsoft shipped that month, by CVEs closed.
Update summary
Fixes 34 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 4.6%. One is linked to ransomware. Among the top half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Windows 11 Version 25H2 for ARM64-based Systems has shipped since this one: KB5087423 (2026-06-09). 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 3 known issues with this update.
- Password icon might be missing or invisible in the lock screen sign-in options
- Mirror networking on Windows Subsystem for Linux might fail
- RemoteApp sessions might fail to start on Azure Virtual Desktop
KB5072033 is a December 2025 rollup covering Windows 11 25H2 (ARM64 and x64) and Windows 10 1809, fixing 34 CVEs with a highest Severity of High (CVSS 8.8). What stands out is that at least one included CVE is on the CISA KEV list, meaning it has confirmed real-world exploitation, though none are tied to ransomware and peak EPSS remains modest at 5%.
Do this: Prioritize deploying KB5072033 to internet-facing and privileged Windows 11 25H2 and Windows 10 1809 systems first because of the confirmed CISA KEV exploited CVE in this batch.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5072033
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5072033
- Released
- 2025-12-09
- Last changed
- 2026-08-14
- Changes tracked
- 2
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 KB5072033 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5072033 (checked 2026-08-29). Verify against the article before acting.
Password icon might be missing or invisible in the lock screen sign-in options
Symptoms
After installing the August 2025 non-security preview update ( KB5064081 ) or later updates, you might notice that the password icon is not visible in the sign-in options on the lock screen. If you hover over the space where the icon should appear, you’ll see that the password button is still available. Select this placeholder to open the password text box and enter your password. After entering your password, you can sign in normally.
Individuals using Windows Home or Pro editions on personal devices are very unlikely to experience this issue. This issue primarily affects enterprise or managed IT environments.
Workaround
This issue is addressed in KB5074105 .
Mirror networking on Windows Subsystem for Linux might fail
Symptoms
After installing the October 2025 Windows non-security update ( KB5067036 ), released on October 28, 2025, or a later update, mirrored networking mode in Windows Subsystem for Linux (WSL) might cause issues with some third-party VPNs. When this issue occurs, you might see a “ No route to host ” error, even though the Windows host can still access the same destinations. As a result, you might be unable to access corporate resources over VPN and experience failures with VPN-dependent services.
This issue happens because the VPN application's virtual interface doesn’t ...
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-2025-60710 | High | 7.8 | 4.6% | KEV Ransomware |
| CVE-2025-62221 | High | 7.8 | 4.6% | KEV |
| CVE-2025-62456 | High | 8.8 | 4.6% | No |
| CVE-2025-62549 | High | 8.8 | 4.6% | No |
| CVE-2025-62567 | High | 8.8 | 4.6% | No |
| CVE-2025-54100 | High | 7.8 | 4.6% | No |
| CVE-2025-55233 | High | 7.8 | 4.6% | No |
| CVE-2025-59516 | High | 7.8 | 4.6% | No |
| CVE-2025-59517 | High | 7.8 | 4.6% | No |
| CVE-2025-62454 | High | 7.8 | 4.6% | No |
| CVE-2025-62457 | High | 7.8 | 4.6% | No |
| CVE-2025-62461 | High | 7.8 | 4.6% | No |
| CVE-2025-62462 | High | 7.8 | 4.6% | No |
| CVE-2025-62464 | High | 7.8 | 4.6% | No |
| CVE-2025-62466 | High | 7.8 | 4.6% | No |
| CVE-2025-62467 | High | 7.8 | 4.6% | No |
| CVE-2025-62470 | High | 7.8 | 4.6% | No |
| CVE-2025-62472 | High | 7.8 | 4.6% | No |
| CVE-2025-62474 | High | 7.8 | 4.6% | No |
| CVE-2025-62571 | High | 7.8 | 4.6% | No |
| CVE-2025-62572 | High | 7.8 | 4.6% | No |
| CVE-2025-64661 | High | 7.8 | 4.6% | No |
| CVE-2025-64673 | High | 7.8 | 4.6% | No |
| CVE-2025-64658 | High | 7.5 | 4.6% | No |
| CVE-2025-62565 | High | 7.3 | 4.6% | No |
| CVE-2025-62570 | High | 7.1 | 4.6% | No |
| CVE-2025-62469 | High | 7.0 | 4.6% | No |
| CVE-2025-62569 | High | 7.0 | 4.6% | No |
| CVE-2025-62573 | High | 7.0 | 4.6% | No |
| CVE-2025-62463 | Medium | 6.5 | 4.6% | No |
| CVE-2025-62465 | Medium | 6.5 | 4.6% | No |
| CVE-2025-62473 | Medium | 6.5 | 4.6% | No |
| CVE-2025-64670 | Medium | 6.5 | 4.6% | No |
| CVE-2025-62468 | Medium | 5.5 | 4.6% | No |
Scope and sources
- Affected products
- Also released in December 2025
KB5066586
98 CVEs · Critical · exploitedKB5066780
114 CVEs · Critical · exploitedKB5066782
103 CVEs · Critical · exploitedKB5066791
98 CVEs · Critical · exploitedKB5066793
108 CVEs · Critical · exploitedKB5066835
134 CVEs · Critical · exploitedKB5068779
32 CVEs · Critical · exploitedKB5068781
33 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.