CVE-2026-56570 Overview
CVE-2026-56570 affects HCL iControl 4.4.0 and stems from browser autocomplete being enabled on sensitive input fields. The flaw exposes valid usernames, login email addresses, and account identifiers to anyone with access to the browser session. When users access iControl from shared or public workstations, attackers can enumerate valid accounts through browser autofill suggestions. This information supports subsequent credential-based attacks such as password spraying and targeted phishing. The vulnerability is categorized under [CWE-522] (Insufficiently Protected Credentials).
Critical Impact
Attackers with access to a shared browser can harvest valid usernames and email identifiers from iControl login forms, enabling account enumeration and targeted follow-on attacks.
Affected Products
- HCL iControl 4.4.0
- Vendor: HCLTech
- Component: hcltech:icontrol
Discovery Timeline
- 2026-07-31 - CVE-2026-56570 published to NVD
- 2026-08-05 - Last updated in NVD database
Technical Details for CVE-2026-56570
Vulnerability Analysis
HCL iControl renders login and account-related form fields without disabling browser autocomplete. Browsers store submitted values such as usernames, email addresses, and account identifiers, then re-populate them on subsequent visits. An attacker who reaches the login page on a shared workstation can trigger the browser's autofill suggestions and read previously entered identifiers. This transforms a benign browser convenience feature into an account enumeration channel. The exposure is limited to information stored by the browser, so confidentiality is affected while integrity and availability are not.
Root Cause
The application does not set the autocomplete="off" attribute on sensitive <input> elements in authentication and account forms. Without this directive, modern browsers cache submitted values by default and expose them through dropdown suggestions. The issue is a client-side hardening gap rather than a server-side flaw.
Attack Vector
Exploitation requires access to a browser that previously authenticated to iControl, such as a kiosk, shared desktop, hot-desk workstation, or an unlocked user session. The attacker navigates to the iControl login page and focuses the username or email field. The browser then surfaces cached identifiers, revealing valid accounts. No authentication, elevated privileges, or user interaction from the legitimate user is required at the time of the attack.
No public proof-of-concept code exists, and no verified exploitation payload is available. See the HCL Software Knowledge Base Article for vendor details.
Detection Methods for CVE-2026-56570
Indicators of Compromise
- Login attempts against iControl using previously valid usernames from unexpected source IPs or geographies.
- Failed authentication patterns consistent with account enumeration followed by password spraying against enumerated identifiers.
- Access to the iControl login page from shared or kiosk endpoints followed by rapid authentication attempts against multiple accounts.
Detection Strategies
- Inspect the HTML of iControl authentication and account forms for missing autocomplete="off" attributes on username, email, and account identifier fields.
- Correlate authentication logs to identify enumeration patterns such as multiple valid usernames tried from a single host within a short window.
- Monitor endpoints on shared workstations for browser artifacts (Login Data, form history) containing iControl identifiers.
Monitoring Recommendations
- Enable verbose authentication logging on the iControl application and forward events to a centralized SIEM.
- Alert on repeated failed logins against distinct valid usernames from the same source within short intervals.
- Track access to the iControl login endpoint from shared, unmanaged, or high-risk device categories.
How to Mitigate CVE-2026-56570
Immediate Actions Required
- Apply the vendor guidance published in the HCL Software Knowledge Base Article for iControl 4.4.0.
- Instruct users to avoid accessing iControl from shared, kiosk, or public browsers until the fix is deployed.
- Clear cached form data and saved credentials in browsers previously used to access iControl on shared endpoints.
Patch Information
HCLTech has published remediation guidance for HCL iControl 4.4.0 in knowledge base article KB0132395. Refer to the HCL Software Knowledge Base Article for the current fixed version and configuration steps.
Workarounds
- Enforce browser Group Policy that disables form autofill and password saving on managed endpoints used to access iControl.
- Require users to authenticate to iControl only from managed, single-user workstations rather than shared devices.
- Deploy short browser session lifetimes and mandatory sign-out to reduce residual credential caching on shared systems.
# Example: disable Chrome autofill and password manager via policy on Windows
# HKLM\SOFTWARE\Policies\Google\Chrome
reg add "HKLM\SOFTWARE\Policies\Google\Chrome" /v AutofillAddressEnabled /t REG_DWORD /d 0 /f
reg add "HKLM\SOFTWARE\Policies\Google\Chrome" /v PasswordManagerEnabled /t REG_DWORD /d 0 /f
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
