CVE-2025-52612: HCL iControl XSS Vulnerability

CVE-2025-52612 Overview

CVE-2025-52612 affects HCL iControl through a CSV injection weakness in the Export CSV functionality. The vulnerability also enables reflected cross-site scripting (XSS) due to insufficient sanitization of input parameters. An attacker can craft malicious input that gets reflected back to a user's browser or embedded into exported CSV files. When a victim opens the exported file in a spreadsheet application, embedded formulas can execute and lead to data exfiltration or command execution.

The weakness is classified under [CWE-1236] (Improper Neutralization of Formula Elements in a CSV File). Exploitation requires user interaction and low-privilege authentication on the target application.

Critical Impact

Successful exploitation can lead to arbitrary script execution in a victim's browser session or formula execution within spreadsheet applications, resulting in confidentiality, integrity, and availability impacts on user data.

Affected Products

• HCL iControl (specific affected versions listed in the vendor advisory)

Discovery Timeline

• 2026-06-04 - CVE-2025-52612 published to NVD
• 2026-06-04 - Last updated in NVD database

Technical Details for CVE-2025-52612

Vulnerability Analysis

The vulnerability resides in the Export CSV feature of HCL iControl. The application accepts user-controlled input and writes it directly into CSV output without neutralizing formula-trigger characters such as =, +, -, and @. When a recipient opens the exported file in Microsoft Excel, LibreOffice Calc, or Google Sheets, the spreadsheet interprets the leading character as a formula and evaluates it.

The same input parameters are also reflected into HTML responses without proper output encoding. This produces a reflected XSS condition exploitable through crafted URLs delivered to authenticated users.

The combined weakness allows an attacker to execute attacker-supplied JavaScript in a victim's browser or to invoke spreadsheet functions such as DDE, HYPERLINK, or WEBSERVICE from exported files. These functions can launch external processes, exfiltrate cell data to attacker-controlled servers, or trick users into running additional payloads.

Root Cause

The root cause is insufficient input sanitization and output encoding. Input parameters used in both HTML responses and CSV exports are not filtered for active content. Formula-trigger prefixes are not escaped, and HTML special characters are not encoded before reflection.

Attack Vector

The attack vector is network-based but requires user interaction. An authenticated low-privileged attacker submits payloads through the affected input fields. A second user with access to the exported CSV file or the reflected URL triggers execution. The attack chain commonly combines phishing with the exported document to bypass user suspicion.

No public proof-of-concept exploit code is available for CVE-2025-52612. See the HCL Software Knowledge Base Article for technical details published by the vendor.

Detection Methods for CVE-2025-52612

Indicators of Compromise

• CSV files exported from HCL iControl containing cells beginning with =, +, -, or @ followed by spreadsheet functions such as cmd|, HYPERLINK(, or WEBSERVICE(.
• HTTP requests to iControl endpoints containing reflected payloads with <script>, onerror=, or javascript: strings in query or form parameters.
• Outbound DNS or HTTP requests originating from excel.exe, soffice.bin, or browser processes shortly after a user opens an exported CSV.

Detection Strategies

• Inspect web server and application logs for parameters containing formula-injection prefixes or HTML/script syntax submitted to iControl export endpoints.
• Deploy web application firewall (WAF) rules that flag requests with active-content patterns targeting iControl URIs.
• Correlate spreadsheet process executions with subsequent child processes such as cmd.exe, powershell.exe, or unexpected network connections.

Monitoring Recommendations

• Monitor file creation events for CSV files exported from iControl and scan them for formula-trigger characters before distribution.
• Alert on user-agent strings or referrers indicating reflected XSS exploitation attempts against the iControl application.
• Track authentication events from low-privileged accounts followed by repeated CSV export operations or parameter manipulation.

How to Mitigate CVE-2025-52612

Immediate Actions Required

• Review the HCL Software Knowledge Base Article and apply the vendor-supplied fix for HCL iControl.
• Restrict access to the Export CSV feature to trusted users until the patch is deployed.
• Educate users to inspect CSV files for unexpected formulas and to disable automatic formula evaluation in spreadsheet applications.

Patch Information

HCL has published remediation guidance in the HCL Software Knowledge Base Article. Administrators should consult the article for the corrected version of HCL iControl and apply it according to the vendor's upgrade procedure.

Workarounds

• Configure the application or a reverse proxy to strip or prefix leading =, +, -, and @ characters in user-supplied fields before they reach the CSV export routine.
• Enforce strict output encoding on reflected parameters using HTML entity encoding to neutralize XSS payloads.
• Disable Dynamic Data Exchange (DDE) and external content features in Microsoft Excel and equivalent settings in other spreadsheet applications via group policy.