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    2 vulnerabilities by AT&T

    CVE-2026-16771 (GCVE-0-2026-16771)

    Vulnerability from nvd – Published: 2026-07-28 18:21 – Updated: 2026-07-28 19:31
    VLAI
    Title
    CVE-2026-16771
    Summary
    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.
    Severity
    8.8 (High)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    AT&T Arris BGW210‑700 Affected: 0 , ≤ 2.7.7 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        "providerMetadata": {
          "dateUpdated": "2026-07-28T18:58:56.661Z",
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    "dateReserved": "2026-07-23T16:36:49.550Z",
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    CVE-2026-16771 (GCVE-0-2026-16771)

    Vulnerability from cvelistv5 – Published: 2026-07-28 18:21 – Updated: 2026-07-28 19:31
    VLAI
    Title
    CVE-2026-16771
    Summary
    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.
    Severity
    8.8 (High)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    AT&T Arris BGW210‑700 Affected: 0 , ≤ 2.7.7 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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