CVE-2026-92626 in iDSecure
Summary
by MITRE • 09/16/2026
Control iD iDSecure versions prior to 4.8.3.0 are affected by an unauthenticated Denial of Service.
The /api/dguardintegration/dguardVersion endpoint dereferences DGuard integration login state that may be unset, raising an unhandled null reference exception. The exception is thrown from an asynchronous method that returns void, so it is not observed by a caller and can terminate the iDSecure process.
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Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in Control iD iDSecure versions prior to 4.8.3.0 represents a critical unauthenticated Denial of Service condition rooted in improper handling of null references within the application's integration logic. This flaw specifically targets the /api/dguardintegration/dguardVersion endpoint, which is designed to retrieve version information for DGuard integrations. The core technical deficiency lies in the failure to validate the state of the login session before attempting to dereference it. When a request is made without an active or properly established authentication context, the system attempts to access properties associated with a null object reference. This lack of input validation and boundary checking allows any external actor, including unauthenticated users, to trigger this code path simply by sending a standard HTTP GET request to the specified endpoint.
From a technical perspective, the severity of this issue is amplified by how the exception is handled within the asynchronous execution model of the application. The method responsible for processing this request returns void and operates asynchronously, meaning that when an unhandled NullReferenceException occurs, there is no caller mechanism in place to catch or log the error gracefully. In many modern web frameworks, unhandled exceptions in async void methods are not propagated back to the client nor caught by global exception handlers effectively. Instead, these exceptions often result in the abrupt termination of the application process itself. Consequently, a single malicious request can cause the iDSecure service to crash completely, leading to immediate and total loss of availability for all users relying on the platform.
This vulnerability aligns with CWE-476, which describes NULL Pointer Dereference vulnerabilities where software fails to check if an object reference is null before using it. Furthermore, from a threat modeling perspective such as MITRE ATT&CK, this behavior facilitates resource exhaustion and service disruption without requiring authentication credentials. The attacker can leverage this flaw in a distributed manner or through simple automated scripts to repeatedly crash the service, effectively creating a persistent Denial of Service condition that disrupts business operations and security monitoring capabilities provided by the iDSecure platform.
To mitigate this risk, organizations running affected versions must prioritize upgrading to version 4.8.3.0 or later as soon as possible. The vendor has addressed this issue by implementing proper null checks before dereferencing the DGuard integration login state object. Additionally, developers should ensure that asynchronous methods returning void implement robust error handling mechanisms, such as logging exceptions and preventing process termination, to maintain service resilience even in edge cases. Until the upgrade is performed, network-level controls such as Web Application Firewalls may be configured to block or rate-limit requests to this specific endpoint if it does not require public access, although upgrading remains the only definitive remediation for the underlying code defect.