Overview
The cybersecurity community has recently discovered a new vulnerability, CVE-2025-59814, which affects the Zenitel ICX500 and ICX510 Gateway Billing Admin endpoints. This vulnerability is significant as it allows malicious actors to gain unauthorized access to these endpoints, thereby enabling them to read the entire contents of the Billing Admin database. Given the sensitive nature of the information stored in these databases, this vulnerability poses a substantial risk to user security and data privacy.
Vulnerability Summary
CVE ID: CVE-2025-59814
Severity: High (8.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential for significant data leakage
Affected Products
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Product | Affected Versions
Zenitel ICX500 | All versions prior to patch
Zenitel ICX510 | All versions prior to patch
How the Exploit Works
The vulnerability stems from an improperly configured security setting on the Zenitel ICX500 and ICX510 Gateway Billing Admin endpoints. Specifically, these endpoints do not correctly validate user credentials, allowing attackers to bypass the standard authentication processes. Once in, the malicious actors have unrestricted access to the Billing Admin database, enabling them to read the entire contents of this database.
Conceptual Example Code
Here is a conceptual example of how this vulnerability might be exploited. This is a hypothetical HTTP request that a malicious actor could use to bypass the endpoint’s security:
GET /admin/billing HTTP/1.1
Host: vulnerable-icx510.example.com
Authorization: Bearer manipulated_tokenIn this example, the attacker uses a manipulated token to trick the endpoint into thinking they are an authenticated user. This allows them to access the Billing Admin database and potentially exfiltrate sensitive data.
Mitigation
Users of Zenitel ICX500 and ICX510 are advised to apply the vendor-supplied patch as soon as possible. If this is not immediately feasible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. These systems can detect and block suspicious activities, preventing unauthorized access to the Billing Admin endpoint. Regularly monitoring system logs and network traffic can also help in identifying any illicit activities in real-time.
