CVE Alert: CVE-2025-11355 – UTT – 1250GW

Risk verdict

High risk of remote code execution on the affected gateway devices; public exploit availability and low attack complexity demand urgent attention.

Why this matters

Full compromise of the device can expose confidential data, enable manipulation of routing/telemetry, and disrupt network availability. Adversaries could use the foothold to pivot within the network or degrade service for customers.

Most likely attack path

• Attacker targets the remote management interface over the network (AV:N, no user interaction required).
• They supply crafted input to the vulnerable pvid argument in the /goform/aspChangeChannel function, triggering a buffer overflow.
• Requires at least low privileges on the device (PR:L); successful exploitation yields memory corruption with high impact on C, I, and A (S:U, E: POC/F depending on source). The Scope is unchanged, so impact is contained to the device itself but with potential disruption to services.

Who is most exposed

Devices that expose management interfaces to the internet or untrusted networks, common in small offices or factory/gateway deployments, are at highest risk. Systems lacking network segmentation or MFA for management access are particularly exposed.

Detection ideas

• Anomalous requests to /goform/aspChangeChannel, especially with unusual or oversized pvid values.
• Logs showing device instability, crashes, or reboots following specific HTTP requests.
• Sudden spikes in CPU or memory on the gateway around management-interface activity.
• IDS/IPS signatures or PoC-like payloads targeting buffer overflow patterns.
• Repeated failed auth attempts followed by successful remote commands on the device.

Mitigation and prioritisation

• Patch now: upgrade to v2v3.2.2-200710 or newer; verify deployment across affected devices.
• If patching is delayed: restrict management access to trusted networks, disable or limit remote management, enforce strong authentication/MFA where possible, and apply network segmentation.
• Implement WAF/NGFW rules to block crafted requests to the management endpoint; monitor for related payloads.
• Asset discovery and inventory to identify all affected devices; schedule test and rollout in a controlledChange window; alert SOC/IR and enable enhanced monitoring during patching.