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CVE-2026-82694 – Missing Authentication / Unauthorized Manufacturing Service Access – Tenda AC1206 1

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Summary

CVE-2026-82694 is a missing authentication vulnerability in the Web UI of Tenda AC1206 firmware 15.03.06.23. The flaw resides in the R7WebsSecurityHandler function that handles requests to the /goform/ate endpoint, allowing a remote, unauthenticated attacker to invoke privileged device functionality without providing any credentials. The issue has been rated CRITICAL with a CVSS score of 10.0, and a public exploit is available.

Technical details

  • Root cause: the /goform/ate endpoint, handled by the R7WebsSecurityHandler function in the device’s Web UI, does not enforce authentication before processing requests.
  • Trigger condition: an attacker sends a crafted HTTP request directly to the /goform/ate endpoint on the exposed management interface.
  • Attack vector: network-based, requiring no authentication, user interaction, or local access — the interface only needs to be reachable.
  • Impact: unauthenticated remote attackers can invoke the affected function to bypass authentication controls entirely, potentially leading to full compromise of the device’s confidentiality, integrity, and availability.

Affected software

  • Tenda AC1206, firmware version 15.03.06.23 (Web UI component)

Severity

  • CVSS v3.1 Base Score: 10.0 (CRITICAL)
  • CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: check with Tenda for an updated firmware release beyond version 15.03.06.23 that addresses this issue and apply it as soon as it is available; no vendor-confirmed patched version has been published at the time of this writing.
  • If no patch is available: remove the device’s Web UI and /goform/ate endpoint from direct internet exposure, restrict management interface access to trusted internal networks only (e.g., via firewall rules or VPN), and disable remote management if not required.
  • Monitor for unsolicited or anomalous requests to /goform/ate on internet-facing Tenda AC1206 devices, and consider replacing end-of-life or unsupported hardware.

References

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