CVE Alert: CVE-2025-48826 – Planet – WGR-500

Risk verdict

High-risk, remotely exploitable format-string flaw that can be triggered without user interaction; patch or network controls should be applied promptly.

Why this matters

An attacker can induce memory corruption through crafted HTTP requests to the affected device, with high potential impact on confidentiality, integrity, and availability. The combination of network access, low attack complexity, and low privileges required means reliable exploitation could enable remote code execution or device takeovers, disrupting services and compromising adjacent systems.

Most likely attack path

An attacker would probe for the WGR-500 v1.3411b190912, then deliver a sequence of HTTP requests targeting formPingCmd to trigger the vulnerability. Because UI is not required and the CVSS indicates network access with low complexity and low privileges, exploitation can occur with limited attacker foothold. A successful breach could permit control of the device and lateral movement within the same network, depending on exposure and segmentation.

Who is most exposed

Devices deployed with exposed or poorly segmented HTTP management interfaces in enterprise, data-centre, or service-provider networks are typical at risk; IoT/edge appliances common in operational networks may be directly accessible to attackers.

Detection ideas

• Spikes in HTTP requests to the formPingCmd path followed by device instability or restarts.
• Memory corruption symptoms: crashes, core dumps, or watchdog resets in device logs.
• Unusual CPU load or process crashes associated with specific payloads.
• Repeated failed or crafted management requests from external or unusual internal IPs.
• Correlated auth failures or access attempts around management endpoints.

Mitigation and prioritisation

• Apply vendor patch for WGR-500 v1.3411b190912; validate in test environment before production rollout.
• Restrict management interfaces: allowlist IPs, disable or limit HTTP management externally, deploy behind a firewall or VPN.
• Improve network segmentation and least-privilege access to IoT/edge devices; monitor for anomalous management traffic.
• Enable robust logging and central correlation for formPingCmd activity.
• Change-management: schedule staged deployment; verify stability; communicate remediation plan.
• Prioritisation note: treat as priority 1 if KEV is present or EPSS ≥ 0.5. Otherwise, proceed with planned patching plus compensating controls.