Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-3294

Severity CVSS v4.0:
HIGH
Type:
CWE-20 Input Validation
Publication date:
22/05/2026
Last modified:
01/06/2026

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.<br /> <br /> Successful exploitation allows an attacker to obtain full administrative control of the affected device, potentially impacting on confidentiality, integrity, and availability.

Impact

Vector 4.0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
8.70
Severity 4.0
HIGH
Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:tp-link:re305_firmware:*:*:*:*:*:*:*:* 20260515 (excluding)
cpe:2.3:h:tp-link:re305:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:re360_firmware:*:*:*:*:*:*:*:* 20260515 (excluding)
cpe:2.3:h:tp-link:re360:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:re580d_firmware:*:*:*:*:*:*:*:* 20260515 (excluding)
cpe:2.3:h:tp-link:re580d:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:re650_firmware:*:*:*:*:*:*:*:* 20260429 (excluding)
cpe:2.3:h:tp-link:re650:1.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wa860re_firmware:*:*:*:*:*:*:*:* 20260515 (excluding)
cpe:2.3:h:tp-link:tl-wa860re:4.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools