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CVE-2026-70243

Last refreshed2026-10-15

Status: UPDATED  |  Advisory ID: CVE-2026-70243

Key Details

CVECVE-2026-70243
CVSS Score / Version
7.0 (High) / CVSS v3.1
Updated2026-10-13
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is high; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
Microsoft Windows 11 (version 23H2) and Microsoft Windows Server 2025
Classified as
CWE-416 (Use After Free)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftWindows 11 (version 23H2)
MicrosoftWindows Server 2025
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

What to Do

Monitor Microsoft's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-70243
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-70243

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