CVE-2026-46948 Overview
CVE-2026-46948 is a medium-severity access control vulnerability [CWE-284] in the Oracle Utilities Network Management System (NMS), a component of Oracle Utilities Applications. The flaw resides in the Security component and permits a low-privileged attacker with network access via HTTP to compromise the system. Successful exploitation requires human interaction from a user other than the attacker. Exploitation can result in unauthorized update, insert, or delete access to a subset of NMS data, along with unauthorized read access to a subset of NMS data.
Critical Impact
Authenticated attackers can trick a legitimate user into an interaction that grants them unauthorized read and write access to Oracle Utilities Network Management System data.
Affected Products
- Oracle Utilities Network Management System versions 2.4.0.1.0 through 2.4.0.1.32
- Oracle Utilities Network Management System versions 2.5.0.1.0 through 2.5.0.1.17, and 2.5.0.2.0 through 2.5.0.2.11
- Oracle Utilities Network Management System versions 2.6.0.2.0 through 2.6.0.2.7, and 25.12.0.0.0
Discovery Timeline
- 2026-07-21 - CVE CVE-2026-46948 published to NVD as part of the Oracle July 2026 CPU Security Alert
- 2026-07-23 - Last updated in NVD database
Technical Details for CVE-2026-46948
Vulnerability Analysis
The vulnerability affects the Security component of Oracle Utilities Network Management System, a platform used by electric, gas, and water utilities to monitor and manage distribution networks. The weakness is classified under [CWE-284] Improper Access Control. An authenticated but low-privileged user can craft an HTTP request that, when combined with an action from a separate user, causes the application to perform data operations outside the attacker's authorization boundary.
Because the flaw requires user interaction from a second party, exploitation typically involves a social engineering vector such as a crafted link, embedded content, or a request delivered through a shared workflow. Once triggered, the attacker gains partial read access and the ability to insert, update, or delete a subset of NMS records. Availability is not impacted.
Root Cause
The root cause is improper enforcement of access control checks within an HTTP-accessible interface of the NMS Security component. Authorization decisions do not adequately validate the invoking principal against the target data or action, allowing a low-privileged session to influence operations that should be restricted.
Attack Vector
The attack originates over the network using HTTP against an NMS endpoint. The attacker must hold valid low-privileged credentials and must induce a legitimate user to perform an action that completes the exploit chain. No verified public proof-of-concept is available at the time of writing, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS probability of exploitation remains low.
Refer to the Oracle July 2026 CPU Security Alert for vendor technical details.
Detection Methods for CVE-2026-46948
Indicators of Compromise
- Unexpected HTTP requests to NMS Security component endpoints originating from low-privileged user sessions.
- Audit log entries showing record insert, update, or delete operations that do not align with the acting user's assigned role.
- Session activity where two distinct users participate in a request chain that results in privileged data modification.
Detection Strategies
- Enable and review application-level audit logging for all data-modifying operations within Oracle Utilities NMS.
- Correlate HTTP access logs with NMS role assignments to identify authorization anomalies.
- Alert on user-interaction patterns consistent with social engineering, such as clicks on externally sourced links that trigger NMS state changes.
Monitoring Recommendations
- Forward NMS application, web server, and database audit logs to a centralized SIEM for longitudinal analysis.
- Baseline normal read/write volumes per user role and alert on deviations.
- Monitor for repeated failed authorization attempts followed by successful data modifications from the same session.
How to Mitigate CVE-2026-46948
Immediate Actions Required
- Apply the July 2026 Oracle Critical Patch Update to all affected Oracle Utilities Network Management System deployments.
- Inventory NMS instances and confirm versions against the affected ranges 2.4.0.1.0-2.4.0.1.32, 2.5.0.1.0-2.5.0.1.17, 2.5.0.2.0-2.5.0.2.11, 2.6.0.2.0-2.6.0.2.7, and 25.12.0.0.0.
- Review recent NMS audit logs for anomalous write activity by low-privileged accounts pending patch deployment.
Patch Information
Oracle released fixes for CVE-2026-46948 in the July 2026 Critical Patch Update. Administrators should apply the update following Oracle's documented upgrade path. See the Oracle July 2026 CPU Security Alert for the patch matrix and installation guidance.
Workarounds
- Restrict network access to NMS HTTP interfaces to trusted internal segments and administrative networks.
- Enforce least privilege for NMS user roles and revoke unnecessary low-privileged accounts.
- Provide targeted user awareness training to reduce the risk of interaction-based exploitation vectors such as malicious links.
- Enable multi-factor authentication on NMS access points where supported to raise the cost of credentialed attacks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
