CVE-2025-54947 is a cryptographic vulnerability identified in Apache StreamPark versions 2.0.0 through 2.1.6. The root cause is the use of a hard-coded encryption key embedded within the software, violating secure cryptographic practices as defined by CWE-321. Instead of generating keys dynamically or allowing secure configuration, the software uses a fixed, immutable key for encryption operations. This design flaw allows attackers who gain access to the software binaries or source code to extract the key via reverse engineering or static code analysis. With this key, attackers can decrypt sensitive information protected by the encryption, potentially exposing confidential data. Additionally, attackers might forge encrypted data, which could lead to unauthorized access or manipulation of system functions relying on encrypted tokens or messages. The vulnerability is remotely exploitable without requiring authentication or user interaction, increasing its risk profile. However, the impact is limited to confidentiality loss; integrity and availability are not directly affected. The Apache Software Foundation addressed this issue in version 2.1.7 by removing the hard-coded key and implementing secure key management practices. No known exploits are currently reported in the wild, but the presence of a fixed key presents a significant risk if attackers target unpatched systems.

For European organizations, the primary impact of CVE-2025-54947 is the potential exposure of sensitive data encrypted by Apache StreamPark, which could include operational data, configuration secrets, or user information. This confidentiality breach could lead to secondary attacks such as unauthorized access or data manipulation if attackers leverage decrypted information. Organizations in sectors relying on Apache StreamPark for data processing or streaming analytics—such as finance, telecommunications, manufacturing, and critical infrastructure—may face increased risk. The vulnerability could undermine trust in data confidentiality and compliance with data protection regulations like GDPR, potentially resulting in legal and reputational consequences. Since the vulnerability does not affect integrity or availability, operational disruptions are less likely, but the risk of data leakage remains significant. European entities using outdated versions should prioritize patching to prevent exploitation, especially given the ease of key extraction and remote exploitation without authentication.

1. Upgrade all Apache StreamPark deployments to version 2.1.7 or later, which eliminates the hard-coded key vulnerability. 2. Conduct a thorough audit of cryptographic key management practices within the organization to ensure no other components use hard-coded or weak keys. 3. Review and rotate any encryption keys or credentials that may have been exposed due to this vulnerability. 4. Implement network monitoring and anomaly detection focused on encrypted data flows and authentication tokens to detect potential misuse or unauthorized decryption attempts. 5. Restrict access to Apache StreamPark binaries and source code repositories to minimize risk of key extraction via insider threats. 6. Educate development and security teams on secure cryptographic practices to prevent recurrence of similar issues. 7. For critical environments, consider additional encryption layers or hardware security modules (HSMs) to safeguard keys. 8. Maintain an inventory of all systems running affected versions to ensure comprehensive patching and risk management.