Executive Summary

CVE-2025-57624 is a DLL hijacking vulnerability in CYRISMA Agent versions before 444. It allows local users to escalate their privileges and execute arbitrary code by exploiting the way the agent loads multiple DLLs. Essentially, an attacker with local access can place malicious DLLs in locations where the agent will load them, causing the malicious code to run with elevated privileges.

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Impact Analysis

This vulnerability can allow a local attacker to escalate their privileges to SYSTEM level on the affected machine. By exploiting the DLL hijacking flaw, the attacker can execute arbitrary code with high privileges, potentially leading to full system compromise, unauthorized access to sensitive data, and control over the affected system.

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Detection Guidance

To detect this vulnerability on your system, you can check the permissions of the CYRISMA Agent installation directory and its files, especially looking for writable permissions by low-privileged users on folders and executables like DataSpotliteAgent.exe. For example, on a Windows system, use the command: icacls C:\CYRISMA_Agent to review permissions. Also, verify the version of the CYRISMA Agent or Sensor installed to see if it is before version 444 or Sensor version less than 2.5. Additionally, check if the service 'Cyrisma_Agent' is running srvany.exe from the expected path. These checks can help identify if the vulnerable setup exists. [2]

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Mitigation Strategies

Immediate mitigation steps include upgrading the CYRISMA Agent or Sensor to version 444 or later (for the Agent) or Sensor version 2.5 or later, where the vulnerability is fixed. Until an upgrade is possible, restrict write permissions on the CYRISMA Agent installation directory (C:\CYRISMA_Agent) and its contents to prevent low-privileged users from modifying executables like DataSpotliteAgent.exe or placing malicious DLLs. Specifically, remove Modify and Write permissions for Authenticated Users on the folder and files except for srvany.exe. Restart the service after applying these changes to prevent DLL hijacking and arbitrary code execution. [2]

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