CVE-2026-33950 is a critical privilege escalation vulnerability affecting SignalK Server, a server application utilized in maritime environments. The vulnerability allows unauthenticated attackers to exploit an Admin Role Injection via the /enableSecurity endpoint. With a CVSS score of 9.4, it signifies a substantial threat, particularly as it enables attackers to gain full Administrator access to the SignalK server. This access allows for the modification of sensitive vessel routing data, alteration of server configurations, and access to restricted endpoints.
This vulnerability poses a significant risk to organizations that utilize SignalK Server for managing their maritime operations. Given the critical nature of the data involved, the potential for exploitation could lead to severe operational disruptions or unauthorized data manipulation. The vulnerability has been patched in version 2.24.0-beta.4, which organizations should upgrade to as a matter of urgency.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. Failure to do so could expose sensitive information and operational integrity to attackers.
As of the current evaluation, there are no known public exploits or proofs of concept available for this vulnerability, though the absence of known exploitation should not diminish the urgency for remediation.
Vulnerability Details
Signal K Server, prior to version 2.24.0-beta.4, is affected by a privilege escalation vulnerability via Admin Role Injection through the /enableSecurity endpoint. This vulnerability is classified under CWE-285 (Improper Authorization), CWE-288 (Authentication Bypass Using an Untrusted Name or Control), and CWE-862 (Lack of Authorization) due to the nature of the exploit.
The severity is assessed as critical with a CVSS score of 9.4, indicating a high impact on confidentiality and integrity, with a low impact on availability. The attack vector is network-based, requiring no privileges or user interactions, which facilitates potential exploitation.
Technical Analysis
The root cause of CVE-2026-33950 lies in the improper handling of role authorization within the SignalK server. Attackers can leverage this flaw to inject an Admin role without authentication, effectively bypassing the security measures intended to protect sensitive functionalities. The attack complexity is low, as it does not require any significant technical knowledge or effort from the attacker.
The attack vector being network-based allows attackers to initiate the exploit remotely, which increases the threat level. No user interaction is required, making it easy for an attacker to exploit this vulnerability. The potential impacts on confidentiality and integrity are high, as unauthorized access can lead to the exposure and modification of critical data, while availability impact is assessed as low.
Risk & Impact Analysis
The deployment of SignalK Server in maritime environments presents unique risks. The ability for an unauthenticated attacker to gain full administrative access means that vital routing data can be altered, potentially leading to navigational errors or compromised operational integrity. Organizations using SignalK Server should evaluate their exposure and implement necessary security controls.
The urgency for remediation is critical, given the high CVSS score and the potential for exploitation. This vulnerability could have far-reaching implications not just for individual organizations, but for maritime safety as a whole.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions of SignalK Server include all versions prior to 2.24.0 and specifically versions 2.24.0-beta1, 2.24.0-beta2, and 2.24.0-beta3. Organizations should ensure they are updated to version 2.24.0-beta.4 or later to mitigate this vulnerability.
Mitigation & Remediation
Organizations must patch their SignalK Server installations to version 2.24.0-beta.4 to remediate this vulnerability. Additionally, organizations should review their configurations and monitoring processes to ensure that unauthorized access attempts are detected and addressed promptly. Configuration hardening and network controls can further mitigate risks.
For continuous security measures, organizations can engage in continuous penetration testing to identify and remediate similar vulnerabilities in their systems.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual access patterns, particularly around the /enableSecurity endpoint. Behavioral anomalies, such as unauthorized changes to user roles or configurations, should also be flagged for investigation.
Network signatures that match unauthorized access attempts could provide early warnings of exploitation. System changes that are not authorized by administrators should prompt immediate review and response.
AppSecure Threat Intelligence Insight
CVE-2026-33950 highlights the ongoing risks associated with improper authorization mechanisms in server applications. As organizations increasingly rely on such technologies, it is imperative that security teams implement robust security practices to mitigate potential threats.
This incident serves as a reminder of the importance of regular security assessments and updates. Security teams should consider engaging in a comprehensive penetration testing methodology to continuously evaluate their defenses against evolving threats.
In conclusion, the vulnerability underscores the need for proactive vulnerability management. Establishing a detailed vulnerability management program can help organizations stay ahead of potential exploits.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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