CVE Alert: CVE-2025-11387 – Tenda – AC15

Risk verdict

Why this matters

Most likely attack path

Who is most exposed

Detection ideas

• Unexplained device crashes, reboots, or memory corruption symptoms.
• Anomalous traffic patterns targeting the /goform/fast_setting_pppoe_set endpoint or related configuration services.
• IDS/IPS alerts for known overflow/exploit patterns or unusual PPPoE configuration attempts.
• Logs showing unusual admin activity or rapid, repeated requests to configuration endpoints.
• Evidence of post-exploit unusual outbound connections from the device.

Mitigation and prioritisation

• Patch promptly: apply the vendor’s fixed firmware as soon as available; prioritise deployment.
• Hardening: disable or tightly restrict remote management exposure; implement network access controls and firewall rules.
• Segmentation: isolate affected devices from sensitive segments; enforce least-privilege routing.
• Monitoring: enable anomaly detection for device crashes, reboots, and config changes; alert on rapid access to management endpoints.
• Change-management: schedule rapid testing and phased rollout; verify stability before broad deployment. If a KEV or EPSS indicator emerges, reclassify to priority 1.