Full Report
Microsoft has released the optional KB5052077 preview cumulative update for Windows 10 22H2 with nine bug fixes and changes, including a fix for a longstanding known issue that breaks SSH connections. [...]
Analysis Summary
# Vulnerability: No Security Vulnerability Detailed in Article
## CVE Details
- CVE ID: N/A (This article describes a **non-security optional update** fixing functionality issues, not a vulnerability remediation.)
- CVSS Score: N/A
- CWE: N/A
## Affected Systems
- Products: Windows 10 (specifically referencing Build 19045.5555 for version 22H2)
- Versions: Specific versions relying on functionality addressed by KB5052077.
- Configurations: General Windows 10 systems receiving the optional update.
## Vulnerability Description
This update (KB5052077) is primarily a **non-security optional update** that addresses functional and stability issues, including a fix for broken SSH connections. It also resolves issues concerning:
1. **Desktop Window Manager (dwm.exe):** Repeated stops responding.
2. **Chinese IME:** Issues with responding when changing font size/family, and poor color contrast ratios for search suggestions.
3. **Country and Operator Settings Asset (COSA):** Updates COSA profiles for certain mobile operators.
*Note: The article does not detail any previously existing CVEs patched by this update; it focuses on feature/stability fixes.*
## Exploitation
- Status: N/A (No security exploit information provided)
- Complexity: N/A
- Attack Vector: N/A
## Impact
- Confidentiality: Negligible (Not security related)
- Integrity: Minor (Improvement in system stability)
- Availability: Minor (Improved stability for DWM and IME)
## Remediation
### Patches
- **KB5052077 (February 2025 Optional Update):** Updates Windows 10 22H2 to Build 19045.5555.
- Available via Windows Update or the Microsoft Update Catalog (Search for KB5052077).
### Workarounds
- The article details issues prevented by the update, not workarounds for a vulnerability:
- **Known Issue 1 (Citrix):** Some old January 2025 security updates might fail to complete installation due to Citrix components and revert changes. (Recommendation would be to install KB5052077 after resolving Citrix conflicts if the January security update is desired.)
- **Known Issue 2 (System Guard):** Event 7023 errors appearing in Event Viewer since January 14, 2025 updates.
## Detection
- Detection focuses on successful installation of the update package:
- Check for Windows 10 22H2 systems running **Build 19045.5555**.
- **Indicators of Compromise:** None related to security in this update summary.
## References
- Vendor Advisories: Microsoft Update Catalog
- Relevant links - defanged:
- hxxps://www.catalog.update.microsoft.com/Search.aspx?q=KB5052077
- hxxps://www.bleepingcomputer.com/news/microsoft/windows-10-kb5052077-update-fixes-broken-ssh-connections/