CVE-2025-52626: HCL AION Command Injection Vulnerability

CVE-2025-52626 Overview

CVE-2025-52626 is a command injection vulnerability (CWE-78) discovered in HCL AION version 2.0. This security flaw allows attackers to execute unintended commands on the underlying system, potentially leading to unauthorized actions and system compromise. Command injection vulnerabilities occur when user-controllable input is incorporated into system commands without proper sanitization, enabling attackers to inject and execute arbitrary operating system commands.

Critical Impact

Successful exploitation of this command injection vulnerability could allow local attackers to execute arbitrary commands on the underlying system, potentially leading to data theft, system modification, or denial of service.

Affected Products

• HCL AION version 2.0

Discovery Timeline

• 2026-02-03 - CVE CVE-2025-52626 published to NVD
• 2026-02-04 - Last updated in NVD database

Technical Details for CVE-2025-52626

Vulnerability Analysis

This command injection vulnerability in HCL AION stems from improper neutralization of special elements used in an OS command (CWE-78). The vulnerability requires local access to the system and involves high attack complexity, meaning specific conditions must be met for successful exploitation. An authenticated attacker with low privileges can potentially leverage this flaw to execute arbitrary commands on the underlying operating system.

The attack requires local access to the vulnerable system and does not require user interaction. While the scope remains unchanged (the vulnerability affects only the vulnerable component itself), successful exploitation can impact the confidentiality, integrity, and availability of the system, all rated as low impact.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization in HCL AION's command processing functionality. When user-supplied input is passed to system-level commands without adequate filtering or escaping of shell metacharacters, attackers can inject additional commands that the system will execute with the application's privileges.

Attack Vector

The attack vector for CVE-2025-52626 is local, requiring the attacker to have some level of access to the target system running HCL AION 2.0. The attacker must possess low-level privileges on the system and exploit specific conditions due to the high attack complexity. The vulnerability allows injection of OS commands through improperly sanitized input fields or parameters within the AION application.

Successful exploitation involves crafting malicious input containing shell metacharacters (such as ;, |, &&, or backticks) that break out of the intended command context and execute attacker-controlled commands. Technical details regarding specific attack payloads can be found in the HCL Software Knowledge Base Article.

Detection Methods for CVE-2025-52626

Indicators of Compromise

• Unusual process spawning from HCL AION application processes
• Unexpected command-line arguments containing shell metacharacters (;, |, &&, `)
• Anomalous system calls or file system access patterns originating from AION processes
• Log entries showing malformed or suspicious input being processed by the application

Detection Strategies

• Monitor process execution chains for unusual child processes spawned by HCL AION
• Implement command-line argument logging to detect injection patterns and shell metacharacters
• Deploy endpoint detection and response (EDR) solutions to identify anomalous command execution behavior
• Review application logs for input validation failures or error messages related to command processing

Monitoring Recommendations

• Enable comprehensive logging for HCL AION application activities and system calls
• Configure alerts for process creation events associated with AION that involve shell interpreters
• Monitor for unauthorized file modifications or data exfiltration attempts from the AION system
• Implement network traffic analysis to detect potential command and control communications following exploitation

How to Mitigate CVE-2025-52626

Immediate Actions Required

• Review the HCL Software Knowledge Base Article for official guidance
• Restrict local access to systems running HCL AION 2.0 to only trusted users
• Implement the principle of least privilege for accounts that interact with HCL AION
• Monitor HCL AION deployments for signs of exploitation while awaiting vendor patches

Patch Information

HCL has published information regarding this vulnerability in their knowledge base. Organizations should consult the HCL Software Knowledge Base Article for the latest patch information and remediation guidance specific to their deployment of HCL AION 2.0.

Workarounds

• Implement strict input validation for all user-controllable data processed by HCL AION
• Restrict network and local access to HCL AION systems using firewall rules and access controls
• Deploy application-level firewalls or web application firewalls (WAFs) to filter potentially malicious input
• Consider isolating HCL AION systems in a segmented network environment to limit potential impact

Organizations should apply vendor-supplied patches as soon as they become available and follow the mitigation guidance provided in the official HCL security advisory.