CVE-2026-65934 in BT122
Summary
by MITRE • 08/13/2026
An unencrypted 'pause encryption request' message causes a denial of service in the BT122 module. See vulnerability B-E10 in the related paper below.
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Analysis
by VulDB Data Team • 08/13/2026
The vulnerability described involves an insufficient security control within the BT122 module where an unencrypted pause encryption request message can be exploited to trigger a denial of service condition. This represents a critical weakness in the cryptographic communication protocols implemented by the device, as it fails to properly secure or validate administrative commands that could disrupt normal operations. The absence of encryption for this specific message type creates an attack surface that allows unauthorized parties to manipulate the encryption state of the system without proper authentication or authorization mechanisms.
The technical flaw stems from the module's failure to implement proper cryptographic protection for critical control messages within its encryption framework. When an attacker sends an unencrypted pause encryption request, the system processes this command without adequate verification or encryption validation, leading to a complete disruption of the normal encryption workflow. This vulnerability directly violates security best practices outlined in industry standards such as cwe-310, which addresses cryptographic weaknesses and the importance of proper encryption implementation for all sensitive communications within security systems.
From an operational perspective, this vulnerability can result in significant service disruption and potential data exposure risks. The denial of service condition may prevent legitimate users from accessing encrypted services or performing necessary encryption operations, effectively rendering parts of the system non-functional. The impact extends beyond simple availability issues as the vulnerability could potentially be exploited to gain insights into the system's operational state or to create conditions that facilitate further attacks.
The attack surface for this vulnerability is particularly concerning given that it involves a pause encryption request message which typically represents a legitimate administrative function within encryption systems. However, the lack of encryption for such control messages means that any attacker who can intercept or inject network traffic can manipulate the system's encryption state. This aligns with ATT&CK technique T1072, which covers application deployment and command execution through legitimate system processes, and represents a specific failure in process integrity validation.
Mitigation strategies should focus on implementing end-to-end encryption for all administrative messages within the BT122 module, including pause encryption requests. The system must enforce cryptographic protection for all control communications and implement proper authentication mechanisms before processing any administrative commands. Additionally, network segmentation and monitoring should be implemented to detect unauthorized message injection attempts. Security protocols should be updated to ensure that all communication channels between components maintain confidentiality and integrity as specified in NIST SP 800-57 standards for cryptographic key management and secure communications.
The vulnerability demonstrates a fundamental flaw in the module's security architecture where the principle of least privilege is not properly enforced for administrative functions. Proper implementation would require that all encryption control messages be encrypted using strong cryptographic algorithms and authenticated through proper access controls. This includes implementing message authentication codes or digital signatures to verify the integrity and authenticity of pause encryption requests before processing them within the system.
Organizations utilizing BT122 modules should conduct comprehensive security assessments to identify similar vulnerabilities in other components of their encryption infrastructure. The vulnerability serves as a reminder of the critical importance of securing all aspects of cryptographic communications, not just the data encryption itself but also the administrative protocols that control encryption operations. Regular security updates and firmware patches should be implemented immediately to address this weakness and prevent exploitation by malicious actors who may attempt to disrupt encryption services or gain unauthorized access to sensitive information.