Full Report
Microsoft has released Windows 11 KB5077181 and KB5075941 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. [...]
Analysis Summary
This summary focuses on the security aspect of the provided update description, noting that specific CVEs were not enumerated in the source text. Vulnerabilities fixed are covered under the umbrella of the "February 2026 Patch Tuesday" security patches.
# Vulnerability: Unspecified Security Vulnerabilities Patched in Windows 11 February 2026 Cumulative Updates
## CVE Details
- CVE ID: **Not specified in the provided text.** (These updates contain February 2026 Patch Tuesday security patches for vulnerabilities discovered in previous months.)
- CVSS Score: **Not specified in the provided text.**
- CWE: **Not specified in the provided text.**
## Affected Systems
- Products: Windows 11
- Versions:
- Version 25H2 (Build changes to **26200.7840**)
- Version 24H2 (Build changes to **26100.7840**)
- Version 23H2 (Build changes to **226x1.6050**)
- Configurations: All configurations receiving the February 2026 Patch Tuesday updates.
## Vulnerability Description
The cumulative updates address security vulnerabilities discovered in previous months, as part of the February 2026 Patch Tuesday release cycle. Specific technical details regarding the nature of the vulnerabilities (e.g., RCE, elevation of privilege, etc.) are not detailed in this summary of the update rollout announcement.
## Exploitation
- Status: **Uncertain/Requires external reference.** (Implied that known vulnerabilities are being addressed, but exploitation status for specific CVEs is not detailed.)
- Complexity: **Cannot be determined.**
- Attack Vector: **Cannot be determined.**
## Impact
- Confidentiality: **Uncertain.** (Impact depends on the severity of the underlying fixed vulnerabilities.)
- Integrity: **Uncertain.**
- Availability: **Uncertain.**
## Remediation
### Patches
The following cumulative updates are available and mandatory:
- Windows 11 25H2/24H2: **KB5077181**
- Windows 11 23H2: **KB5075941** (Note: The text references KB5073455 in an internal reference context, but KB5075941 is the primary update package listed for 23H2 in this context.)
### Workarounds
- No specific security workarounds or mitigations were detailed beyond the application of the patches.
## Detection
- Detection strategies for specific security flaws are not detailed, as this summary focuses on the release of the corrective patch.
- **Mitigation Note:** The update includes a process for securely rolling out new **Secure Boot certificates** via Windows quality updates, identifying eligible devices based on update signals.
## References
- Microsoft Update Catalog (For manual downloads): hxxps://www.catalog.update.microsoft.com/Search.aspx?q=windows%2011
- Windows 11 25H2/24H2 Support Link (KB5077181): hxxp://support.microsoft.com/en-us/help/5077181
- Windows 11 23H2 Support Link (KB5075941): hxxps://support.microsoft.com/help/5075941 (Note: The article lists KB5073455 in relation to 23H2 build numbers, requiring cross-reference.)