CVE-2026-25084 — AI Deep Analysis Summary

🚨 **Essence**: ZLAN5143D has an **Access Control Error**. Authentication can be bypassed! <br>📉 **Consequences**: Attackers gain direct access to internal URLs.…

🛡️ **Root Cause**: **CWE-306** (Missing Authentication for Critical Function). The device fails to enforce proper identity verification before granting access to sensitive resources.

🏢 **Affected**: **ZLAN5143D** Serial Server by **ZLAN Information Technology Co.** (China). Specific firmware versions not listed in data, but the hardware model is the target.

💻 **Attacker Capabilities**: Bypass login screens. Access **internal URLs** directly. High impact on **Confidentiality**, **Integrity**, and **Availability**. No privileges needed initially.

⚡ **Exploitation**: **Low Threshold**. <br>✅ Attack Vector: Network (AV:N) <br>✅ Complexity: Low (AC:L) <br>✅ Privileges Required: None (PR:N) <br>✅ User Interaction: None (UI:N)

📂 **Public Exploit**: **No**. The `pocs` field is empty. No public Proof-of-Concept or wild exploitation code is currently available in the provided data.

🔍 **Self-Check**: Scan for **ZLAN5143D** devices on your network. Try accessing admin/internal URLs without credentials. If accessible, you are vulnerable. Use network scanners to identify the device fingerprint.

🔧 **Official Fix**: **Unknown**. The data does not contain a patch version or vendor advisory link with fix details. Only reference links to CISA and ZLAN contact are provided.

🚧 **Workaround**: Since no patch is listed, **isolate** the device. Restrict network access to the management interface. Change default credentials (though bypass is possible, it adds friction).…

🔥 **Urgency**: **CRITICAL**. CVSS Score is **9.1** (High). Network-accessible, no auth required, high impact. Treat as **Immediate Action Required** until a patch is confirmed.