CVE-2025-15619 Overview
CVE-2025-15619 is a broken access control vulnerability in HCL Connections, an enterprise social collaboration platform. The flaw allows an unauthorized user to view data in a single specific scenario. The issue maps to [CWE-284: Improper Access Control].
Exploitation requires network access, low privileges, and user interaction. The vulnerability impacts confidentiality only, with no integrity or availability impact. HCL Software has documented the issue in its knowledge base.
Critical Impact
An authenticated low-privilege user can view restricted data in a narrowly scoped scenario, leading to limited information disclosure within HCL Connections deployments.
Affected Products
- HCL Connections (refer to vendor advisory for affected versions)
Discovery Timeline
- 2026-06-23 - CVE-2025-15619 published to NVD
- 2026-06-23 - Last updated in NVD database
Technical Details for CVE-2025-15619
Vulnerability Analysis
The vulnerability is a broken access control weakness in HCL Connections. Access control enforcement fails in a specific scenario, permitting an unauthorized user to read data they should not access. The issue is classified under [CWE-284: Improper Access Control].
The scope of the disclosure is narrow. Only confidentiality is affected; integrity and availability remain intact. The Exploit Prediction Scoring System (EPSS) probability is 0.098%, indicating low likelihood of observed exploitation activity in the near term.
No public exploit code or proof-of-concept is available. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Root Cause
The root cause is improper enforcement of access control checks in a specific code path within HCL Connections. The application fails to validate whether the requesting user has authorization to view the targeted data under the conditions described by HCL. Refer to the HCL Software Knowledge Base Article for vendor-supplied technical details.
Attack Vector
An attacker must hold a valid low-privilege account on the HCL Connections instance. The attack is conducted over the network and requires user interaction to trigger the vulnerable scenario. Successful exploitation returns data the attacker would otherwise be unable to view.
No verified exploitation code is publicly available. Technical details for reproducing the scenario are documented by the vendor in the linked knowledge base article.
Detection Methods for CVE-2025-15619
Indicators of Compromise
- Unexpected access events in HCL Connections audit logs where low-privilege accounts retrieve content outside their permitted scope.
- Anomalous read requests from authenticated users to objects or endpoints they do not typically access.
- User sessions following the specific interaction pattern described in the HCL knowledge base advisory.
Detection Strategies
- Review HCL Connections access logs for read operations that should have been blocked by role or community membership checks.
- Correlate authentication events with subsequent data retrieval activity to identify unauthorized data views.
- Establish a baseline of normal data access patterns per user role and alert on deviations.
Monitoring Recommendations
- Forward HCL Connections application and audit logs to a centralized SIEM for retention and analysis.
- Build dashboards that track per-user access volume and access to sensitive communities or files.
- Alert on access attempts that match the conditions described in HCL Software's advisory.
How to Mitigate CVE-2025-15619
Immediate Actions Required
- Review the HCL Software Knowledge Base Article for the affected versions and remediation guidance.
- Apply vendor-supplied patches or updates as soon as they are validated in a non-production environment.
- Audit user accounts and remove unnecessary low-privilege access to reduce the attack surface.
Patch Information
HCL Software has published guidance in its knowledge base. Administrators should consult the HCL Software Knowledge Base Article for the official patch and version information.
Workarounds
- Restrict access to the affected functionality through network-level controls where feasible.
- Enforce least-privilege role assignments to limit the population of users who could trigger the scenario.
- Increase audit logging verbosity around the affected component to support post-event investigation until a patch is applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
