CVE-2025-30183: CyberData Intercom Info Disclosure Flaw

CVE-2025-30183 Overview

CVE-2025-30183 affects the CyberData 011209 SIP Emergency Intercom, an IP-based emergency communication device used in industrial control system (ICS) environments. The device does not properly store or protect web server administrator credentials, exposing them to network-based attackers. The weakness maps to [CWE-522] Insufficiently Protected Credentials.

An unauthenticated remote attacker can retrieve administrative credentials over the network without user interaction. Successful exploitation grants full administrative control of the intercom's web management interface. CISA published advisory ICSA-25-155-01 covering this issue.

Critical Impact
Unauthenticated network-based disclosure of administrative credentials enables full takeover of the intercom's web management interface, compromising emergency communication infrastructure.

Affected Products

CyberData 011209 SIP Emergency Intercom (hardware)
CyberData 011209 SIP Emergency Intercom firmware (all versions prior to vendor fix)
Deployments using the device in ICS and critical infrastructure environments

Discovery Timeline

2025-06-09 - CVE-2025-30183 published to NVD
2025-06-09 - CISA released ICS Advisory ICSA-25-155-01
2025-08-12 - Last updated in NVD database

Technical Details for CVE-2025-30183

Vulnerability Analysis

The CyberData 011209 SIP Emergency Intercom stores web administrator credentials in a manner that fails to protect them from unauthorized retrieval. The flaw falls under [CWE-522] Insufficiently Protected Credentials, which covers cases where authentication material is stored or transmitted without adequate cryptographic protection.

Because the intercom exposes a web management interface over the network, an attacker with network reachability can interact with the device's HTTP service. The credential exposure occurs without requiring authentication or user interaction, allowing complete compromise of the administrative account. Once the administrator account is recovered, the attacker can reconfigure SIP settings, alter call routing, disable emergency functions, or pivot deeper into the network.

Root Cause

The root cause is improper handling of administrator credentials by the embedded web server firmware. The device fails to apply sufficient access controls or cryptographic protection to credential storage, allowing recovery through normal network interaction. The vendor advisory and CISA bulletin classify the weakness as insufficient credential protection rather than a memory safety or injection flaw.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker with IP connectivity to the intercom's web interface can reach the vulnerable component directly. In typical deployments, these intercoms reside on internal voice and ICS network segments, but improper segmentation or internet exposure significantly widens the attack surface.

The vulnerability mechanism is described in prose only because no verified proof-of-concept code has been published. See the CISA ICS Advisory ICSA-25-155-01 for vendor-supplied technical details.

Detection Methods for CVE-2025-30183

Indicators of Compromise

Unexpected administrative logins to the CyberData 011209 web interface from unfamiliar source IPs
Configuration changes to SIP routing, firmware update settings, or audio output without an approved change record
HTTP requests to administrative URIs of the intercom originating from non-management VLANs
New or modified user accounts on the intercom's web management interface

Detection Strategies

Monitor HTTP and HTTPS traffic to CyberData 011209 management interfaces and alert on access from outside designated administrative subnets
Capture and review device configuration snapshots on a recurring schedule to detect tampering with SIP and admin settings
Inspect device syslog output for repeated authentication events or unexpected administrative sessions
Correlate network flow data with ICS asset inventories to identify any external exposure of intercom management ports

Monitoring Recommendations

Add the CyberData 011209 intercom to authoritative ICS asset inventories with explicit network segmentation policies
Forward device logs to a centralized SIEM or data lake and build identifications for administrative access patterns
Conduct periodic external scans to confirm the intercom web interface is not reachable from untrusted networks

How to Mitigate CVE-2025-30183

Immediate Actions Required

Restrict network access to the CyberData 011209 web management interface to a dedicated administrative VLAN or jump host
Verify the device is not exposed to the public internet and remove any port-forwarding rules that expose the web interface
Rotate the administrator password and any reused credentials on related systems after applying network restrictions
Review the CISA ICS Advisory ICSA-25-155-01 for vendor-specific guidance and firmware updates

Patch Information

CyberData has been notified through the CISA coordinated disclosure process. Administrators should consult the CISA ICS Advisory ICSA-25-155-01 for the latest firmware availability and vendor mitigations. Apply firmware updates from CyberData as soon as they are validated in a test environment.

Workarounds

Place the intercom behind a firewall that blocks all inbound traffic to the management interface except from approved administrative hosts
Use a VPN or bastion host for any remote administration of the device rather than direct internet access
Disable any unused network services on the intercom to reduce its attack surface
Apply the defense-in-depth recommendations published by CISA for ICS and critical infrastructure environments

bash

# Example network restriction at an upstream firewall (iptables)
# Allow administrative subnet only to reach the intercom web interface
iptables -A FORWARD -s 10.10.50.0/24 -d 10.20.30.40 -p tcp --dport 443 -j ACCEPT
iptables -A FORWARD -d 10.20.30.40 -p tcp --dport 443 -j DROP
iptables -A FORWARD -d 10.20.30.40 -p tcp --dport 80  -j DROP