CVE-2026-12001

medium

Description

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.

References

https://www.tp-link.com/us/support/faq/5210/

https://www.tp-link.com/us/support/download/archer-c20/v6/#Firmware

https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware

https://www.tp-link.com/in/support/download/tl-wr845n/#Firmware

https://www.tp-link.com/in/support/download/archer-mr200/v5/#Firmware

https://www.tp-link.com/in/support/download/archer-c20/v6/#Firmware

https://www.tp-link.com/en/support/download/tl-wr845n/#Firmware

https://www.tp-link.com/en/support/download/archer-mr200/v5/#Firmware

https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware

Details

Source: Mitre, NVD

Published: 2026-07-27

Updated: 2026-07-28

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

CVSS v4

Base Score: 5.2

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

Severity: Medium

EPSS

EPSS: 0.00245