Insyde H2O Tools out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Insyde H2O Tools. This issue affects some unknown processing. This manipulation causes out-of-bounds write. This vulnerability appears as CVE-2025-12052. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Insyde H2O Tools (affected version not known). Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at insyde.com. This vulnerability is known as CVE-2025-12052 since 10/22/2025. The exploitation appears to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202601-2522). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Insyde): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/22/2025 CVE reserved
01/14/2026 +84 days Advisory disclosed
01/14/2026 +0 days VulDB entry created
01/15/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2025-12052 (🔒)
GCVE (CVE): GCVE-0-2025-12052
GCVE (VulDB): GCVE-100-340993
CNNVD: CNNVD-202601-2522 - Insyde InsydeH2O 安全漏洞

Entryinfo

Created: 01/14/2026 08:30
Updated: 01/15/2026 20:06
Changes: 01/14/2026 08:30 (60), 01/15/2026 20:06 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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