CVE-2026-109836

State: Published
Severity: 8.4 High
Published: Nov 3, 2026
Updated: Nov 3, 2026
Reserved: Oct 13, 2026

Description

The Core Temp kernel driver provided by ALCPU is vulnerable to insufficient access control in an exposed IOCTL, which may allow physical memory to be read or written.

Scores

CVSS	Score	Vector	Source
4.0	8.4 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	jpcert
3.0	6.7 Medium	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	jpcert

Weaknesses

CWE-782 Exposed IOCTL with insufficient access control

Affected Products

Product	Versions
Core TempALCPU	before 1.21Affected

References

http://www.alcpu.com/CoreTemp
https://jvn.jp/en/jp/JVN23328936/

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