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.

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ALCPU Core Temp unaffected
Version Status Constraints
0 affected < 1.21

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.alcpu.com/CoreTemp cve-icon cve-icon
https://jvn.jp/en/jp/JVN23328936/ cve-icon cve-icon
History

Wed, 04 Nov 2026 04:45:00 +0000

Type Values Removed Values Added
Title Insufficient Access Control in Core Temp Kernel Driver Enables Physical Memory Read/Write

Tue, 03 Nov 2026 23:00:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-782
References
Metrics cvssV3_0

{'score': 6.7, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.4, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-11-03T22:52:42.855Z

Reserved: 2026-10-13T06:39:11.365Z

Link: CVE-2026-109836

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-03T23:17:25.697

Modified: 2026-11-03T23:17:25.697

Link: CVE-2026-109836

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T04:30:09Z

Weaknesses