CVE-2026-40369

High

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

secure@microsoft.com·CWE-822·Published 2026-05-12

CVSS

7.8

EPSS

0.04

KEV

Exploits

cve.orgen

105 chars

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

NVDen

105 chars

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Version	Type	Source	Base	Exp	Impact	Vector
3.1	Primary	cve.org	7.8	—	—	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
3.1	Secondary	ENISA EUVD	7.8	—	—	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
3.1	Secondary	NVD	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H