PT-2026-65570 · At&T · Arris Bgw210‑700
CVE-2026-16771
·
Published
2026-07-28
·
Updated
2026-07-28
CVSS v3.1
8.8
High
| Vector | AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
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.
Fix
Missing Authentication
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Arris Bgw210‑700