Security Advisory

CVE-2026-16771

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-28 18:21:40

Last updated 2026-07-28 19:31:06

Assigner certcc

CVSS score not scored

State PUBLISHED

Description

In firmware versions 2.7.7 and earlier, the Arris BGW210‑700 gateway fails to enforce any server‑side authentication on its /cgi-bin/*.ha management endpoints, relying solely on client‑side CSS/JavaScript gating that can be bypassed by any HTTP client. This allows unauthenticated attackers on the LAN to read sensitive configuration data, modify persistent device settings, or trigger backend diagnostic operations. The issue appears systemic across the CGI handler chain.

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