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

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CVE-2026-12001

Severity CVSS v4.0:
MEDIUM
Type:
CWE-798 Use of Hard-coded Credentials
Publication date:
27/07/2026
Last modified:
28/07/2026

Description

A hardcoded credential<br /> vulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, Archer C20 v6 &amp; Archer MR200 v5).  Authentication-related credential material is<br /> embedded within a password file in the firmware image and may be recovered<br /> through firmware analysis.<br /> <br /> <br /> <br /> <br /> <br /> Successful<br /> exploitation could result in unauthorized access to privileged functions on<br /> affected devices.

Impact

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

Base Score: 5.20 MEDIUM
Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

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

Base Score 4.0
5.20
Severity 4.0
MEDIUM

References to Advisories, Solutions, and Tools