Description

A missing authorization vulnerability in the SonicWall Network Security Manager (NSM) On-Prem Management interface allows a lower-privileged Admin user to escalate privileges to SuperAdmin.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.1",
  "pubDate": "2026-09-04T19:17:27.463Z",
  "pubdate": "2026-09-04T19:17:27.463Z",
  "executiveSummary": "This vulnerability involves a missing authorization defect within the SonicWall Network Security Manager (NSM) On-Prem Management interface.\nThe security flaw permits an authenticated user with lower-level administrative privileges to bypass access control checks and perform unauthorized actions reserved for the SuperAdmin role.\nThis represents a critical privilege escalation vulnerability, as it effectively allows a restricted user to gain full administrative control over the management platform.\nThe impact is significant, as an attacker with low-privilege access can manipulate security policies, modify system configurations, manage managed devices, and potentially compromise the entire network infrastructure governed by the NSM.\nThe vulnerability is exploitable by an attacker who already possesses valid, lower-privileged administrative credentials on the management interface.\nThere are no requirements for external network exposure, as the exploitation is performed directly against the management interface. Successful exploitation results in complete compromise of the application's authorization model, undermining the principle of least privilege.",
  "technicalDetails": "The root cause of this vulnerability lies in an improper authorization mechanism within the SonicWall NSM On-Prem management interface.\nSpecifically, the application fails to adequately validate the session role or perform server-side permission checks when processing administrative requests initiated by authenticated users.\nIn a secure configuration, the NSM architecture should enforce strict role-based access control (RBAC) checks at the application controller level for every sensitive function or API endpoint.\nIn this instance, the management interface does not sufficiently verify that the requesting user's session token holds the necessary authorization levels before executing administrative functions.\nAn attacker can exploit this by crafting and sending HTTP requests to administrative endpoints that are typically restricted to the SuperAdmin role.\nBecause the server-side logic relies on client-provided metadata or incorrectly validated session roles, it fails to enforce the intended security boundary between lower-privileged Admin accounts and the SuperAdmin account.\nThe attack flow begins with the attacker authenticating normally as a low-privileged administrator. Once the session is established, the attacker identifies the API endpoints or UI management actions that trigger privileged backend operations.\nBy manipulating these requests—for example, by modifying parameters or directly invoking the administrative endpoint—the attacker bypasses the client-side UI limitations.\nThe server, lacking proper secondary authorization checks, processes the request as if it were issued by a SuperAdmin, thereby granting the attacker elevated privileges.\nThe vulnerability resides within the internal management service modules responsible for handling administrative configuration changes and policy management.\nBecause this happens within the administrative interface, the exploitation is internal to the application logic rather than involving memory corruption or injection flaws.\nThe post-exploitation impact is severe, enabling the adversary to manipulate the configuration of the management console, export sensitive device information, push malicious policies to managed firewalls, and gain comprehensive control over the security architecture that the NSM platform governs.\nThis defect effectively collapses the intended administrative hierarchy within the software, allowing for complete horizontal and vertical movement within the management interface."
}