Windows 11-26h1-e.x — End of Life
Active High riskWindows 11-26h1-e.x is still supported until Mar 13, 2029, in 872 days. The most recent release in this series is 10.0.28000. 3 CVEs are tracked for this series.
Windows 11-26h1-e.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 11-26h1-e | Feb 10, 2026 | Mar 13, 2029 | Mar 13, 2029 | 10.0.28000 | Active |
CVEs affecting Windows 11-26h1-e.x (3)
| CVE | Severity | CVSS | EPSS | KEV | Cycle | Description | Published |
|---|---|---|---|---|---|---|---|
| CVE-2021-36958 | HIGH | 7.8 | 30.79% | — | 11-26h1-e | A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file … | Aug 12, 2021 |
| CVE-2011-3389 | MEDIUM | 4.3 | 73.32% | — | 11-26h1-e | The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefo… | Sep 6, 2011 |
| CVE-1999-0524 | MEDIUM | 4.0 | 32.15% | — | 11-26h1-e | ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts. | Aug 1, 1997 |
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[](https://eolcanary.com/explore/windows/11-26h1-e)Frequently asked questions
Is Windows 11-26h1-e end of life?
No. Windows 11-26h1-e.x is still supported until March 13, 2029. It continues to receive security patches and bug fixes.
What CVEs affect Windows 11-26h1-e?
There are 3 CVEs tracked for Windows 11-26h1-e.x. See the full list above with CVSS and EPSS scores.
What is the latest Windows 11-26h1-e version?
The latest Windows 11-26h1-e.x patch release is 10.0.28000. Always run the latest patch to benefit from all security fixes.
When was Windows 11-26h1-e first released?
Windows 11-26h1-e was released on February 10, 2026. See the full version timeline in the table above.
Is it safe to run Windows 11-26h1-e in production?
Yes, Windows 11-26h1-e is still supported. Support ends on March 13, 2029. Make sure you run the latest patch (10.0.28000) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA