CVE-2026-102814: TP-Link RE305 V3 authentication bypass in TDDP v2 service

CVE-2026-102814 · Severity: info · Published 2026-10-27

The TP-Link RE305 V3 range extender contains an authentication weakness in its TDDP v2 service that uses a fixed, publicly derivable cryptographic key. An attacker on the same local network can forge protocol packets and gain unauthorized access to privileged operations, potentially executing arbitrary commands with root privileges on the device.

Vendors: TP-Link.

Quick answers

Is CVE-2026-102814 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102814 being exploited in the wild.
How severe is CVE-2026-102814?
Informational severity, published 27 October 2026.
Which products and versions are affected?
TP-Link RE305 V3 V3.
Is there a fix for CVE-2026-102814?
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-2026-102814 attacked?
It is attacked over the network or from the adjacent network, in a network appliance.
Am I affected by CVE-2026-102814?
Check whether you run TP-Link RE305 V3 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 TDDP v2 service uses a hardcoded and derivable cryptographic key for authentication, allowing unauthenticated attackers on the local network to forge protocol packets and access privileged TDDP operations. The vulnerability can lead to arbitrary command execution with root privileges when the TDDP service is running. Attack requires network adjacency but no prior authentication or user interaction.

Affected products

  • TP-Link RE305 V3 V3

Timeline

  • 2026-10-27: disclosed

References

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