CVE-2026-17356 in API Connect
Summary
by MITRE • 11/07/2026
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a local attacker to obtain sensitive information due to the use of a hard-coded cryptographic key.
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Analysis
by VulDB Data Team • 11/07/2026
The vulnerability identified in IBM API Connect versions 12.1.0.0 through 12.1.1.2 represents a critical failure in secure configuration management, specifically centering on the improper handling of cryptographic material within the application's internal architecture. This flaw allows any local attacker who has gained access to the system environment to extract sensitive information that was intended to remain confidential. The root cause lies in the implementation of encryption mechanisms where a static, hard-coded cryptographic key is utilized rather than dynamically generated or securely stored keys unique to each deployment instance. In modern security practices, relying on fixed secrets embedded directly within software binaries or configuration files violates fundamental principles of defense-in-depth and secure coding standards. When such a key remains constant across different installations, it effectively neutralizes the protective value of encryption for any data protected by that specific algorithmic implementation, as knowledge of this single key grants access to all encrypted payloads secured under its authority.
From a technical perspective, this issue aligns closely with CWE-798: Use of Hard-coded Credentials and CWE-321: Use of a One-Time Key Only Once. The presence of a hard-coded key means that the confidentiality of sensitive data is not dependent on operational secrets managed by system administrators but rather on the obscurity of the source code or configuration files, which is an insecure security model known as security through obscurity. Local attackers with access to the file system can inspect application binaries, library dependencies, or unencrypted configuration dumps to locate this static key. Once obtained, the attacker can decrypt sensitive data stored within the API Connect environment, such as user credentials, session tokens, internal service communication secrets, or other proprietary information processed by the platform. This capability transforms a local access foothold into a significant privilege escalation scenario regarding data confidentiality, allowing for comprehensive reconnaissance and potential further exploitation of downstream systems that trust the compromised credentials.
The operational impact of this vulnerability is severe in environments where IBM API Connect serves as a central hub for managing APIs across multiple services or microservices architectures. If an attacker compromises a single node within the cluster due to local access vulnerabilities such as insecure file permissions, container escape mechanisms, or weak host-level authentication, they can leverage the hard-coded key to decrypt sensitive data flowing through or stored by the API gateway. This exposure undermines trust in the integrity of the entire API management plane and may lead to regulatory non-compliance with standards like GDPR, HIPAA, or PCI-DSS, which mandate strict controls over encryption key lifecycle management and storage. Furthermore, because the key is static across versions 12.1.0.0 through 12.1.1.2, this flaw persists regardless of routine configuration changes made by administrators who may assume that default settings are sufficiently secure without realizing the underlying cryptographic weakness.
To mitigate this risk, organizations must prioritize immediate patching to a version where IBM has addressed the key management architecture, ensuring that keys are generated dynamically per deployment or retrieved from a dedicated hardware security module or cloud-based key management service rather than being embedded in code. In the interim, strict access controls should be enforced on all systems running affected versions to prevent local unauthorized access. This includes implementing robust operating system-level permissions, restricting container runtime privileges, and auditing file access logs for any attempts to read application binaries or configuration directories containing cryptographic material. Additionally, security teams should rotate any secrets that were encrypted using the compromised key if possible, although this may be technically challenging depending on how the data is stored. Long-term remediation involves adopting a zero-trust architecture where no component trusts another implicitly and all sensitive data is protected by keys managed through secure, auditable processes aligned with NIST SP 800-57 guidelines for cryptographic key management.