CVE-2025-8997: OpenText Enterprise Security Manager Exposure

CVE-2025-8997 Overview

CVE-2025-8997 is an information exposure vulnerability affecting OpenText Enterprise Security Manager (ESM). The flaw is classified under [CWE-598], which covers the use of GET requests with sensitive query strings. Remote attackers can exploit the issue over the network, though exploitation requires low-level privileges and user interaction according to the CVSS 4.0 vector. Successful exploitation exposes confidential information without altering system integrity or availability. OpenText documents the issue in the Micro Focus Knowledge Base Article.

Critical Impact
An authenticated remote attacker can access sensitive information within OpenText Enterprise Security Manager, undermining the confidentiality of security monitoring data.

Affected Products

OpenText Enterprise Security Manager (ESM)
Refer to the Micro Focus Knowledge Base Article for the specific affected versions
No additional CPE entries have been published in NVD at this time

Discovery Timeline

2025-08-25 - CVE-2025-8997 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-8997

Vulnerability Analysis

OpenText Enterprise Security Manager is a security information and event management (SIEM) platform used for correlating and analyzing security telemetry. The vulnerability allows a remote actor with low privileges to obtain information that should remain protected. The weakness is categorized as [CWE-598], indicating that sensitive data is placed in locations where it becomes accessible to unauthorized parties, typically through query strings, logs, or referer headers.

Because ESM aggregates security event data across an enterprise, any exposure of internal artifacts, tokens, or configuration values can inform follow-on attacks against monitored systems.

Root Cause

The root cause is improper handling of sensitive information during network communication or client interaction. Under [CWE-598], sensitive values are transmitted through channels where they can be captured by intermediate systems, cached by browsers, or logged by web servers. The vulnerable component in ESM exposes such values to authenticated users who should not have access to them.

Attack Vector

The attack vector is network-based. The CVSS 4.0 metrics indicate that the attacker must already hold valid low-privileged credentials and must induce a user to perform an action. This aligns with information exposure via URL parameters or interface flows where a victim triggers the disclosure. No changes to system integrity or availability occur; the impact is limited to confidentiality of data held within ESM.

Refer to the Micro Focus Knowledge Base Article for vendor-provided exploitation prerequisites and remediation steps.

Detection Methods for CVE-2025-8997

Indicators of Compromise

Unusual HTTP GET requests to ESM endpoints containing sensitive parameters such as session tokens, credentials, or identifiers in query strings
Access to ESM management URLs from user accounts that do not typically interact with those resources
Web server or proxy logs showing repeated retrieval of the same parameterized ESM URLs by low-privileged users

Detection Strategies

Inspect ESM and upstream web server access logs for sensitive values transmitted in URL query strings
Baseline normal ESM user behavior and flag deviations, including access patterns that traverse administrative or configuration URLs
Correlate authentication events with subsequent HTTP requests to identify low-privileged accounts accessing sensitive resources

Monitoring Recommendations

Forward ESM web tier logs and reverse proxy logs to a centralized analytics platform for retention and search
Alert on requests that include known sensitive parameter names in the URL rather than the request body
Monitor outbound referer headers from ESM users that may leak internal URLs containing sensitive parameters to third-party domains

How to Mitigate CVE-2025-8997

Immediate Actions Required

Apply the OpenText fix documented in the Micro Focus Knowledge Base Article as soon as it is available for your deployment
Rotate credentials, session tokens, and API keys that may have been exposed to ESM users during the vulnerable window
Restrict ESM console access to trusted networks and enforce least privilege on all ESM user roles

Patch Information

OpenText has published remediation guidance in the Micro Focus Knowledge Base Article (KM000042482). Administrators should consult the article for the fixed versions and upgrade instructions applicable to their environment. No public exploit or CISA KEV listing is currently associated with CVE-2025-8997.

Workarounds

Place ESM behind a reverse proxy configured to strip or rewrite sensitive query string parameters where feasible
Disable or restrict the affected ESM feature paths for user roles that do not require them
Enforce short session lifetimes and require re-authentication for administrative operations to reduce exposure of long-lived tokens

bash

# Example reverse proxy hardening (nginx) to prevent logging of sensitive query strings
# Consult the OpenText advisory before changing production configuration
log_format esm_safe '$remote_addr - $remote_user [$time_local] '
                    '"$request_method $uri" $status $body_bytes_sent '
                    '"$http_referer" "$http_user_agent"';
access_log /var/log/nginx/esm_access.log esm_safe;

# Drop referer header to prevent leakage of internal ESM URLs to third parties
proxy_set_header Referer "";