Description
A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local attacker to escalate privileges via DLL side-loading. The application loads certain dynamic-link library (DLL) dependencies using the default Windows search order, which includes directories that may be writable by non-privileged users.\n\n\n\nBecause these directories can be modified by unprivileged users, an attacker can place a malicious DLL with the same name as a legitimate dependency in a directory that is searched before trusted system locations. When the application is executed, which is always with administrative privileges, the malicious DLL is loaded instead of the legitimate library.\n\n\n\nThe application does not enforce restrictions on DLL loading locations and does not verify the integrity or digital signature of loaded libraries. As a result, attacker-controlled code may be executed within the security context of the application, allowing arbitrary code execution with elevated privileges.\n\n\n\nSuccessful exploitation requires that an attacker place a crafted malicious DLL in a user-writable directory that is included in the application's DLL search path and then cause the affected application to be executed. Once loaded, the malicious DLL runs with the same privileges as the application.\n\n\n\nThis issue affects \nTR-VISION HOME  versions up to and including 2.0.5.
Published: 2026-03-16
Score: 8.4 High
EPSS: < 1% Very Low
KEV: No
Impact: Privilege Escalation via DLL hijacking leading to arbitrary code execution
Action: Apply Fix
AI Analysis

Impact

The vulnerability is a DLL search order hijacking flaw in Thermalright TR-VISION HOME that allows a local attacker to execute arbitrary code with the same privileges as the application, which runs with administrative rights. The application loads DLL dependencies using the default Windows search order without enforcing path restrictions or digital signature verification. Consequently, an attacker can place a malicious DLL in a writable directory that is searched before trusted system locations, leading to privilege escalation. This scenario corresponds to CWE-829: Installation or Configuration Management Errors.

Affected Systems

Thermalright TR-VISION HOME on Windows 64-bit, versions up to and including 2.0.5.

Risk and Exploitability

The vulnerability has a CVSS base score of 8.4 (high), an EPSS score of less than 1%, and is not listed in the CISA KEV catalog. Exploitation requires local access to a user‑writable directory that is part of the application’s DLL search path. The attacker must craft a malicious DLL with the same name as a legitimate dependency and then trigger the application’s execution. Successful exploitation elevates the attacker to administrative level on the affected system.

Generated by OpenCVE AI on March 17, 2026 at 11:53 UTC.

Remediation

Vendor Solution

The issue can be resolved by modifying the application to load DLL dependencies using absolute paths or by restricting DLL loading to trusted directories such as system library locations. Additionally, implementing digital signature verification for loaded libraries can prevent malicious DLLs from being executed.

Vendor Workaround

Until a vendor patch is available, administrators may mitigate the vulnerability by placing the legitimate DLL dependency in the application's installation directory, ensuring it is loaded before any user-controlled locations in the DLL search order. This reduces the likelihood that a malicious DLL placed in a user-writable directory will be loaded.\n\n\n\nAdditionally, administrators should ensure the application's installation directory is not writable by non-privileged users. Application control mechanisms such as Windows Defender Application Control (WDAC) or AppLocker may also be used to restrict the loading or execution of untrusted DLL files. The issue can be resolved by modifying the application to load DLL dependencies using absolute paths or by restricting DLL loading to trusted directories such as system library locations. Additionally, implementing digital signature verification for loaded libraries can prevent malicious DLLs from being executed.

OpenCVE Recommended Actions

  • Modify the application to load DLL dependencies using absolute paths or restrict loading to trusted directories such as system library locations, and implement digital signature verification for loaded libraries.
  • Place the legitimate DLL dependency in the application's installation directory before any user‑writable locations in the DLL search order and ensure that the installation directory is not writable by non‑privileged users.
  • Use Windows Defender Application Control (WDAC) or AppLocker to restrict loading or execution of untrusted DLL files.
  • Check the vendor’s support site for updates or patches and apply them as soon as they become available.

Generated by OpenCVE AI on March 17, 2026 at 11:53 UTC.

Tracking

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Advisories

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History

Tue, 17 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Thermalright
Thermalright tr-vision Home
Vendors & Products Thermalright
Thermalright tr-vision Home

Mon, 16 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 16 Mar 2026 07:30:00 +0000

Type Values Removed Values Added
Description A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local attacker to escalate privileges via DLL side-loading. The application loads certain dynamic-link library (DLL) dependencies using the default Windows search order, which includes directories that may be writable by non-privileged users.\n\n\n\nBecause these directories can be modified by unprivileged users, an attacker can place a malicious DLL with the same name as a legitimate dependency in a directory that is searched before trusted system locations. When the application is executed, which is always with administrative privileges, the malicious DLL is loaded instead of the legitimate library.\n\n\n\nThe application does not enforce restrictions on DLL loading locations and does not verify the integrity or digital signature of loaded libraries. As a result, attacker-controlled code may be executed within the security context of the application, allowing arbitrary code execution with elevated privileges.\n\n\n\nSuccessful exploitation requires that an attacker place a crafted malicious DLL in a user-writable directory that is included in the application's DLL search path and then cause the affected application to be executed. Once loaded, the malicious DLL runs with the same privileges as the application.\n\n\n\nThis issue affects \nTR-VISION HOME  versions up to and including 2.0.5.
Title DLL Injection Privilege Escalation
Weaknesses CWE-829
References
Metrics cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Thermalright Tr-vision Home
cve-icon MITRE

Status: PUBLISHED

Assigner: Toreon

Published:

Updated: 2026-03-16T19:03:52.030Z

Reserved: 2026-03-16T07:06:07.397Z

Link: CVE-2026-4255

cve-icon Vulnrichment

Updated: 2026-03-16T19:01:16.583Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-16T14:20:19.480

Modified: 2026-03-16T14:53:07.390

Link: CVE-2026-4255

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-24T10:45:28Z

Weaknesses