CVE-2026-7219 Totolink CVE debrief

Who should care

Network administrators and security teams responsible for managing and securing Totolink N300RT devices should be aware of this vulnerability and take necessary actions to mitigate the risk. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The vulnerability is caused by a buffer overflow in the /boafrm/formIpQoS file of Totolink N300RT 3.4.0-B20250430. The buffer overflow can be triggered by manipulating the entry_name argument. The attack can be performed remotely. The vulnerability has been publicly disclosed and may be used by attackers. No patch is available yet. Network administrators and security teams should verify the affected product deployments in their environments and review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also consider compensating controls such as Web Application Firewalls and monitor network traffic for suspicious activity.

Defensive priority

High

Recommended defensive actions

• Inventory and assess Totolink N300RT devices for exposure
• Apply vendor patches or updates if available
• Implement network segmentation and isolation
• Monitor network traffic for suspicious activity
• Consider compensating controls such as Web Application Firewalls
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-04-28T04:16:23.327Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Deferred. The vulnerability affects an unknown function of the file /boafrm/formIpQoS in Totolink N300RT 3.4.0-B20250430. The attack may be performed from remote. No exploit details are publicly available. Network administrators and security teams should verify the affected product deployments in their environments.

Official resources