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High 7.8Published Jul 14, 2026
CVE-2026-49173Windows Kernel Elevation of Privilege Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Windows 11 version 26H1. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Windows 11 version 26H1 microsoft:windows_11_26h1 | from 10.0.28000.0 before 10.0.28000.2525 | CNA record |
microsoft windows_11_26h1 microsoft:windows_11_26h1 | before 10.0.28000.2269; before 10.0.28000.2525 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49173vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.