CVE-2025-15105 identifies a security vulnerability in the getmaxun maxun software product, specifically in versions 0.0.1 through 0.0.28. The flaw resides in the authentication route implemented in the file /getmaxun/maxun/blob/develop/server/src/routes/auth.ts, where a hard-coded cryptographic key is used. This improper use of a static key undermines cryptographic security by allowing attackers to manipulate the api_key argument remotely, potentially bypassing authentication or gaining unauthorized access. The vulnerability does not require any privileges or user interaction, but the attack complexity is high, indicating that exploitation demands significant skill or conditions. The CVSS 4.0 base score is 6.3 (medium severity), reflecting network attack vector, high complexity, no privileges required, no user interaction, and limited confidentiality impact. The vendor was notified early but has not issued a patch or response, and no known exploits have been observed in the wild. Given the nature of the flaw, attackers could leverage the hard-coded key to decrypt or forge authentication tokens or API requests, compromising confidentiality of sensitive data or access controls. The vulnerability affects all listed versions up to 0.0.28, indicating a long-standing issue in the product's cryptographic implementation.

For European organizations using getmaxun maxun, this vulnerability poses a risk of unauthorized access due to compromised cryptographic protections in authentication mechanisms. Confidentiality of sensitive data or API communications could be breached if attackers successfully exploit the hard-coded key. Although the attack complexity is high and no widespread exploitation is currently known, the public availability of the exploit increases risk over time. Organizations relying on maxun for critical authentication or API security may face data leakage or unauthorized system access, potentially impacting compliance with GDPR and other data protection regulations. The lack of vendor response and patches further exacerbates the risk, requiring organizations to implement compensating controls. The impact is primarily on confidentiality, with no direct integrity or availability effects reported. However, unauthorized access could lead to secondary impacts depending on the environment and data handled.

Since no official patch or update is available from the vendor, European organizations should take the following specific steps: 1) Immediately audit all deployments of getmaxun maxun to identify affected versions (0.0.1 through 0.0.28). 2) Implement network-level access controls to restrict exposure of the vulnerable authentication endpoint, limiting it to trusted internal networks or VPNs. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious manipulation of the api_key parameter. 4) Where possible, replace or override the hard-coded cryptographic key with a securely generated, unique key per deployment, or disable the vulnerable authentication route if feasible. 5) Monitor logs for unusual authentication attempts or anomalies related to api_key usage. 6) Plan migration to alternative, secure authentication solutions or await vendor patches while maintaining heightened monitoring. 7) Educate developers and security teams about the risks of hard-coded keys and enforce secure coding practices to prevent similar issues. 8) Conduct penetration testing focused on authentication bypass attempts to validate mitigations.