CVE-2026-86150: Tenda CP3 hard-coded credentials in hostapd configuration

CVE-2026-86150 · Severity: medium · CVSS 4.1 · Published 2026-09-05

Tenda CP3 is a wireless networking device used in home and small-office networks. A vulnerability allows an attacker to manipulate the WPA passphrase configuration parameter, resulting in the use of hard-coded credentials that could compromise wireless network security. An attacker can exploit this remotely without authentication, potentially allowing unauthorized network access.

Technologies: Tenda CP3. Vendors: Tenda.

Quick answers

Is CVE-2026-86150 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-86150 being exploited in the wild.
How severe is CVE-2026-86150?
Medium severity, with a CVSS score of 4.1, published 5 September 2026.
Which products and versions are affected?
Tenda CP3 27.5.57.101.
Is there a fix for CVE-2026-86150?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-86150 attacked?
It is attacked over the network.
Am I affected by CVE-2026-86150?
Check whether you run Tenda CP3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the hostapd configuration handler within the custom-x/softap component of Tenda CP3 firmware version 27.5.57.101. The wpa_passphrase argument is not properly validated, permitting manipulation that leads to hard-coded credentials being used for wireless authentication. The attack is network-reachable and requires no prior authentication. Successful exploitation allows an attacker to gain unauthorized wireless network access using predictable credentials. A patch or firmware update from Tenda is recommended.

Affected products

  • Tenda CP3 27.5.57.101

Timeline

  • 2026-09-05: disclosed
  • other: exploit disclosed publicly

References

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