CVE-2026-27790 in Command Centre
Summary
by MITRE • 07/07/2026
Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a restart by sending specific requests, resulting in a temporary denial of service. Version of Command Centre affected:
* 9.50 prior to vCR9.50.260616a (distributed in 9.50.1587(MR1)) * 9.40 prior to vCR9.40.260616a (distributed in 9.40.3130(MR3)) * 9.30 prior to vCR9.30.260616a (distributed in 9.30.3983(MR5)) * 9.20 prior to vCR9.20.260616a (distributed in 9.20.4349(MR7)) * all versions of 9.10 and prior.
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Analysis
by VulDB Data Team • 07/07/2026
The vulnerability under discussion represents an uncaught exception condition that manifests within the T20 Readers component of a security system, specifically affecting multiple versions of the Command Centre software. This issue arises from inadequate error handling mechanisms within the application's codebase, allowing authenticated operators with legitimate access credentials to exploit a fundamental flaw in the system's request processing logic. The vulnerability is classified as CWE-248, which denotes an unchecked exception that can cause unexpected program termination or restart behavior when specific conditions are met during normal operational procedures.
The technical implementation of this vulnerability stems from the absence of proper exception handling routines within the T20 Readers module. When authorized personnel submit carefully crafted requests to the system, these inputs trigger code paths that lead to unhandled exceptions being thrown by the underlying application framework. The lack of defensive programming practices means that these exceptions propagate up through the call stack without appropriate error recovery mechanisms or graceful degradation strategies. This results in the entire T20 Readers component experiencing a forced restart, which disrupts ongoing operations and creates temporary service interruptions for legitimate users who require access to the system's functionality.
From an operational perspective, this vulnerability presents a significant risk to system availability and reliability, particularly within security-critical environments where continuous monitoring and access control are paramount. The fact that only authenticated operators can exploit this vulnerability reduces the attack surface compared to remote exploits, but it does not eliminate the potential for denial of service attacks from insider threats or compromised accounts. The restart behavior creates a window of service disruption that can range from seconds to minutes depending on the system's recovery time, potentially interfering with critical security operations such as access control enforcement, alarm monitoring, and system logging activities.
The impact of this vulnerability extends beyond simple service interruption as it represents a failure in the system's resilience design principles. According to ATT&CK framework category T1499, this vulnerability could be leveraged for availability disruption attacks where an adversary seeks to make system resources unavailable to legitimate users. The affected versions span multiple major releases including 9.50, 9.40, 9.30, 9.20, and all versions of 9.10 and prior, indicating that this is a persistent issue across the product line that requires comprehensive remediation efforts. Organizations utilizing these systems face potential compliance risks as the vulnerability could result in service level agreement violations or regulatory non-compliance issues related to system availability requirements.
Security professionals should prioritize immediate mitigation measures including applying the vendor-provided patches for versions 9.50, 9.40, 9.30, and 9.20 to address this vulnerability. The recommended solution involves implementing proper exception handling mechanisms within the T20 Readers component that can gracefully manage unexpected conditions without causing system restarts. Additionally, organizations should consider implementing network segmentation controls to limit access to critical system components and establish monitoring procedures to detect anomalous request patterns that might indicate exploitation attempts. The vulnerability highlights the importance of defensive programming practices and proper error handling as outlined in industry standards such as the OWASP Top Ten and NIST Cybersecurity Framework guidelines for secure software development lifecycle implementation.