CVE-2026-30896
Received Received - Intake
DLL Hijacking in Qsee Client Installer Allows Privileged Code Execution

Publication date: 2026-03-09

Last updated on: 2026-03-10

Assigner: JPCERT/CC

Description
The installer for Qsee Client versions 1.0.1 and prior insecurely load Dynamic Link Libraries (DLLs). When a user is directed to place some malicious DLL to the same directory and execute the affected installer, then arbitrary code may be executed with the administrative privilege.
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Meta Information
Published
2026-03-09
Last Modified
2026-03-10
Generated
2026-06-16
AI Q&A
2026-03-09
EPSS Evaluated
2026-06-15
NVD
CVE-2026-30896
EUVD
EUVD-2026-10295
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
q-see qsee_client to 1.0.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-427 The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.
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Mitigation Strategies

The developer has ceased product development and recommends users stop using Qsee Client to mitigate the risk.

Avoid running the installer for Qsee Client versions 1.0.1 and earlier, especially from untrusted sources.

Ensure that no untrusted DLL files are placed in the same directory as the installer to prevent arbitrary code execution.

Consider removing or uninstalling affected versions of Qsee Client from your systems.

Executive Summary

The vulnerability affects the installer for Qsee Client versions 1.0.1 and earlier. It involves an insecure method of loading Dynamic Link Libraries (DLLs), where the installer searches for DLLs in an uncontrolled manner. If a malicious DLL is placed in the same directory as the installer and the installer is executed, this can lead to arbitrary code execution with administrative privileges.

Impact Analysis

This vulnerability can allow an attacker to execute arbitrary code on your system with administrative privileges if you run the affected installer from a directory containing a malicious DLL. This means the attacker could potentially take full control of your system, leading to severe security risks such as data theft, system compromise, or further malware installation.

Compliance Impact

I don't know

Detection Guidance

[{'type': 'paragraph', 'content': "The vulnerability affects the installer for Qsee Client versions 1.0.1 and prior, specifically due to insecure DLL loading when a malicious DLL is placed in the installer's directory."}, {'type': 'paragraph', 'content': 'Detection involves verifying if the Qsee Client version 1.0.1 or earlier is installed on the system.'}, {'type': 'paragraph', 'content': "Since the vulnerability is related to DLL loading during installation, monitoring for unexpected DLL files in the installer's directory or suspicious execution of the installer with administrative privileges may help detect exploitation attempts."}, {'type': 'paragraph', 'content': 'No specific commands or automated detection tools are provided in the available information.'}] [2]

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