EfficientLab Controlio before v1.3.95 contains a DLL hijacking vulnerability caused by weak folder permissions in the installation directory. A local attacker can place a specially crafted DLL in this directory and achieve arbitrary code execution with highest privileges, because the affected service runs as NT AUTHORITY\SYSTEM. This vulnerability is classified with a CVSS score of 5.1, indicating a medium severity level.
The risk to organizations includes potential unauthorized access and manipulation of sensitive data. Attackers may leverage this vulnerability to execute arbitrary code, leading to significant integrity impacts. Given the nature of the vulnerability, it is crucial for organizations to prioritize remediation efforts.
As of now, there are no known public exploits or proofs of concept for this vulnerability. However, given its medium exploitability and the potential for serious impact, organizations should address this vulnerability in their priority patch cycle.
Organizations should prioritize patching immediately. The disclosure of this vulnerability on April 23, 2026, highlights the urgency for organizations using EfficientLab Controlio to take appropriate action.
Vulnerability Details
The vulnerability in EfficientLab Controlio is categorized as a DLL hijacking issue, which is linked to weak folder permissions in the installation directory. The CVSS score of 5.1 reflects a medium severity, with an attack vector classified as LOCAL and a low attack complexity. The affected service operates with high privileges, which exacerbates the potential impact.
The vulnerability is identified under CWE-427, demonstrating how improper permissions can lead to significant security threats. Organizations are encouraged to monitor their systems for any unauthorized changes in the specified directories.
Technical Analysis
The root cause of this vulnerability stems from insufficient permissions on the installation directory of EfficientLab Controlio. This misconfiguration allows local attackers to place malicious DLL files, which the application will subsequently load and execute with SYSTEM-level privileges.
The attack vector is local, meaning an attacker must have physical or remote access to the system to exploit this vulnerability. The attack complexity is low, as the attacker requires no user interaction to exploit the vulnerability, and high privileges are necessary to perform the attack.
In terms of impact, the confidentiality impact is low, while the integrity impact is high, due to the potential for unauthorized code execution. The availability impact is none, as the vulnerability does not disrupt service availability.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is significant, as local attackers can leverage the DLL hijacking to gain control over affected systems. This can lead to unauthorized data access, manipulation, and even further exploitation of network resources.
Organizations should assess the blast radius of this vulnerability, particularly in environments where EfficientLab Controlio is deployed. The urgency for remediation is underscored by its medium exploitability score and the potential for high impact.
Given the CVSS score of 5.1, organizations are advised to address this vulnerability as part of their priority patch cycle. Failure to do so may result in unauthorized access to critical systems and data.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to 1.3.95 of EfficientLab Controlio are affected by this vulnerability. Organizations should ensure that they are operating on the latest version to mitigate risks associated with this issue.
Mitigation & Remediation
To mitigate this vulnerability, organizations should update to EfficientLab Controlio version 1.3.95 or later. If an immediate update is not possible, consider implementing stricter permissions in the installation directory to prevent unauthorized access.
Monitoring for unauthorized changes within the installation directory is also recommended. For further guidance on effective penetration testing strategies, organizations may benefit from penetration testing services to ensure all security measures are effectively implemented.
Detection Guidance
Organizations should monitor logs for unusual access patterns and changes in the installation directories of EfficientLab Controlio. Behavioral anomalies that indicate unauthorized DLL placements should also be flagged for further investigation.
Network signatures that identify unauthorized access attempts can also provide valuable insights into potential exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its demonstration of how misconfigured permissions can lead to severe security risks. Security teams should learn from this incident to strengthen their permission management practices and reduce the likelihood of similar vulnerabilities.
Furthermore, this case illustrates the importance of regular security assessments and audits. Organizations should also consider adopting a penetration testing methodology to systematically identify and remediate vulnerabilities.
This vulnerability serves as a reminder for organizations to continuously monitor their security posture and to implement robust security controls. For comprehensive security strategies, organizations may refer to vulnerability management programs that incorporate proactive measures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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