CVE Alert: CVE-2025-54400 – Planet – WGR-500

**Risk verdict** High risk of remote code execution via a network-facing network appliance, triggered by crafted HTTP requests; patching should be treated as urgent if this device is reachable.

**Why this matters** Exploitation could give an attacker full control over the device, enabling data exfiltration, persistence, or network disruption. In practical terms, critical infrastructure and edge services relying on this appliance could experience outages, amplification of attacker footholds, or betrayal of network trust boundaries.

**Most likely attack path** Precondition: the device must be reachable over the network and susceptible to a stack-based overflow via the counts parameter in the ping command; low privileges are required and no user interaction is needed. An attacker can send a sequence of HTTP requests to trigger the overflow, potentially achieving remote code execution and device compromise. Because the scope is unchanged, a compromise could facilitate lateral movement through adjacent network resources or use the device as a conduit for further access.

**Who is most exposed** Commonly deployed in enterprise networks with HTTP management interfaces or remote-access paths; devices exposed directly to the internet or inadequately segmented LANs are at higher risk.

Detection ideas

• Look for HTTP requests that resemble the ping -c <counts> pattern or show abnormal counts values.
• Correlate device crash logs, reboot events, or stack traces following suspicious requests.
• Monitor spikes in management-port traffic or unusual persistent connections to the device.
• Anomalous credential use or configuration changes after suspected exploit attempts.
• Unusual internal traffic patterns originating from the appliance.

Mitigation and prioritisation

• Apply the vendor patch to the affected firmware; if KEV is true or EPSS ≥ 0.5, treat as priority 1.
• Restrict management access (disable WAN exposure, require VPN, enforce ACLs).
• Implement input validation and rate limiting for management HTTP endpoints; deploy WAF rules where feasible.
• Schedule a controlled patch window; test in staging before wider rollout.
• Enhance monitoring and alerting on crash/reboot events and management-interface anomalies.