CVE-2026-3294: Authentication Logic Vulnerability on Multiple TP-Link Range Extenders

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-22 · updated 2026-07-23
Weakness: CWE-20

Description

An authentication logic vulnerability in multiple TP-Link range extenders allows an unauthenticated attacker on an adjacent network to manipulate a login parameter and reset the administrator password due to insufficient validation. Successful exploitation allows an attacker to obtain full administrative control of the affected device, potentially impacting on confidentiality, integrity, and availability.

Affected products

TP-Link Re305 Firmware: before 20260515 — fixed in 20260515
TP-Link Re360 Firmware: before 20260515 — fixed in 20260515
TP-Link Re580D Firmware: before 20260515 — fixed in 20260515
TP-Link Re650 Firmware: before 20260429 — fixed in 20260429
TP-Link Tl-Wa860Re Firmware: before 20260515 — fixed in 20260515

How to fix

Upgrade to a fixed version: TP-Link Re305 Firmware 20260515; TP-Link Re360 Firmware 20260515; TP-Link Re580D Firmware 20260515; TP-Link Re650 Firmware 20260429; TP-Link Tl-Wa860Re Firmware 20260515. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-3294 or the next vulnerability affects your stack