CVE-2025-12051 HIGH

CVE-2025-12051: H2OFFT64.sys is potentially vulnerable to a buffer overflow.

Vendor Insyde Software

Product InsydeH2O tools

Weakness CWE-787

Published January 14, 2026

Last update January 14, 2026

View on NVD All CVEs

CVSS base score

7.8/10

Attack vector Local

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

The drivers in the tool packages use RTL_QUERY_REGISTRY_DIRECT flag to read a registry value to which an untrusted user-mode application may be able to cause a buffer overflow.

Key dates

02Disclosure timeline

January 14, 2026 CVE published

January 14, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-12051 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/787.html