PT-2026-65117 · Tp Link Systems · Archer C20 V6+3

Carlos Trujillo · CVE-2026-12001 · Published 2026-07-27 · Updated 2026-07-27

NVD

CVSS v4.0

5.2

Medium

Base vector

AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

A hardcoded credential vulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, Archer C20 v6 & Archer MR200 v5).  Authentication-related credential material is embedded within a password file in the firmware image and may be recovered through firmware analysis.

Successful exploitation could result in unauthorized access to privileged functions on affected devices.

Fix

Using Hardcoded Credentials

Weakness Enumeration

CWE-798

Related Identifiers

CVE-2026-12001

Affected Products

Archer C20 V6

Archer Mr200 V5

Tl-Wr845N V4

Tl-Wr850N V3

References · 10

• https://tp-link.com/en/support/download/archer-c20/v6/#Firmware · Patch
• https://tp-link.com/en/support/download/archer-mr200/v5/#Firmware · Patch
• https://tp-link.com/in/support/download/archer-mr200/v5/#Firmware · Patch
• https://tp-link.com/in/support/download/tl-wr850n/#Firmware · Patch
• https://tp-link.com/in/support/download/tl-wr845n/#Firmware · Patch
• https://tp-link.com/us/support/faq/5210 · Vendor Advisory
• https://tp-link.com/in/support/download/archer-c20/v6/#Firmware · Patch
• https://tp-link.com/en/support/download/tl-wr845n/#Firmware · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-12001 · Security Note
• https://tp-link.com/us/support/download/archer-c20/v6/#Firmware · Patch