CVE-2014-8423: ARRIS VAP2500 management portal command injection

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 19 September 2026. Confidence: medium.

critical priorityUnauthenticated remote command execution with maximum CVSS impact and high EPSS probability makes this an urgent patching priority.

What it is

The management portal in ARRIS VAP2500 firmware before FW08.41 contains an unspecified injection flaw (CWE-74) that allows remote attackers to execute arbitrary commands. The vulnerability is network-reachable and requires no authentication, making it a severe pre-auth remote code execution issue for exposed devices.

Impact

An unauthenticated remote attacker can execute arbitrary commands on the device, gaining full control of confidentiality, integrity, and availability. This could allow the device to be used as a pivot point or botnet node.

Attack surface

The flaw is in the management portal, reachable over the network (AV:N) with no authentication (Au:N) and no user interaction. Any internet- or network-exposed management interface on affected firmware is a potential entry point.

Exploitation

The CVE is not listed in CISA KEV, but EPSS indicates a high probability of exploitation (0.62476, 99th percentile). The ZDI advisory reference suggests coordinated disclosure, but no public exploit details are provided in the record.

What to do

• Upgrade ARRIS VAP2500 firmware to FW08.41 or later immediately.
• Restrict access to the management portal to trusted networks or VPN only; never expose it to the internet.
• Disable remote management if not required, or place it behind a firewall with strict IP allowlisting.
• Monitor for vendor patches or updated advisories and apply them as they become available.
• Segment affected devices on isolated VLANs to limit lateral movement if compromised.

Detection

• Monitor management portal logs for unusual command execution attempts or unexpected process creation.
• Use network IDS/IPS signatures to detect injection patterns targeting the management interface.
• Audit exposed management portals for unauthorized access or configuration changes.
• Check device firmware versions against the fixed FW08.41 baseline.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.