CVE-2026-12855

H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.

State: Published
Severity: 8.2 High
Published: Sep 9, 2026
Updated: Oct 1, 2026
Reserved: Jun 22, 2026

Description

Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	Insyde

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
InsydeH2OInsyde Software	See in the SolutionAffected

References

https://www.insyde.com/security-pledge/sa-2026009/
https://www.kb.cert.org/vuls/id/553437

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