CVE-2025-12051CWE-787

H2OFFT64.sys is potentially vulnerable to a buffer overflow.

High · published January 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
5.8
In the wild
Unconfirmed
What it is

⚡ An untrusted application can potentially trigger a buffer overflow through registry access! This is one to keep an eye on! 🔥 Think of it like a restaurant where the chef accepts orders from a stranger without checking their credentials first — one wrong instruction could lead to a kitchen disaster! If exploited, an attacker could corrupt memory, crash the system, or even execute malicious code, opening the door to further attacks. This vulnerability can lead to serious instability and loss of control over your system, which is absolutely devastating!

Put simply

Think of it like a restaurant where the chef accepts orders from a stranger without checking their credentials first — one wrong instruction could lead to a kitchen disaster! This vulnerability arises because the drivers in tool packages use the RTL_QUERY_REGISTRY_DIRECT flag, allowing untrusted applications to read registry values unchecked. This oversight can trigger a buffer overflow situation, making it easy for attackers to manipulate memory.

What to do

If exploited, an attacker could corrupt memory, crash the system, or even execute malicious code, opening the door to further attacks. This vulnerability can lead to serious instability and loss of control over your system, which is absolutely devastating! To mitigate this risk, ensure your systems are updated to the latest version where this vulnerability is patched. Additionally, review and restrict user-mode application access to sensitive registry values to prevent untrusted applications from exploiting this flaw. You've got this! By taking these steps, you can secure your systems and protect against potential exploitation! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00168 · 5.8th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-01-14T01:17Z
EPSS history
Timeline
  • 14 JAN 01:17Z
    H2OFFT64.sys is potentially vulnerable to a buffer overflow.
    cvelistv5