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Fri, 27 Feb 2026 00:15:00 +0000
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| Metrics |
ssvc
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Thu, 26 Feb 2026 13:30:00 +0000
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| First Time appeared |
Microsoft
Microsoft windows Microsoft windows 11 Microsoft windows 11 23h2 Microsoft windows 11 25h2 Microsoft windows Server 2025 |
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| Vendors & Products |
Microsoft
Microsoft windows Microsoft windows 11 Microsoft windows 11 23h2 Microsoft windows 11 25h2 Microsoft windows Server 2025 |
Wed, 25 Feb 2026 19:45:00 +0000
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| Description | This vulnerability is caused by a CWE‑159: "Improper Handling of Invalid Use of Special Elements" weakness, which leads to an unrecoverable inconsistency in the CLFS.sys driver. This condition forces a call to the KeBugCheckEx function, allowing an unprivileged user to trigger a system crash. Microsoft silently fixed this vulnerability in the September 2025 cumulative update for Windows 11 2024 LTSC and Windows Server 2025. Windows 25H2 (released in September) was released with the patch. Windows 1123h2 and earlier versions remain vulnerable. | |
| Title | Denial of Service in Microsoft OS | |
| Weaknesses | CWE-159 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Fortra
Published:
Updated: 2026-02-26T15:56:55.089Z
Reserved: 2026-02-17T18:49:03.493Z
Link: CVE-2026-2636
Updated: 2026-02-26T15:56:46.427Z
Status : Awaiting Analysis
Published: 2026-02-25T20:23:48.910
Modified: 2026-02-27T14:06:59.787
Link: CVE-2026-2636
No data.
OpenCVE Enrichment
Updated: 2026-02-26T13:15:00Z