CVE-2026-12001 | A hardcoded credential vulnerability exists in the firmware … | CVSS 5.2 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.

Metadata

CVE ID: CVE-2026-12001
State: PUBLISHED
Assigner: TPLink
Reserved: 2026-06-11 16:23 UTC
Published: 2026-07-27 20:08 UTC
Last updated: 2026-07-28 20:49 UTC
Primary CWE: CWE-798
CWE-798 Use of Hard-coded Credentials
Vendor / Product: TP-Link Systems Inc. / TL-WR850N v3
Sources: cve.org · NVD

Severity & Metrics

5.2 MEDIUM CVSS 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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (4)

Vendor	Product	Platform	Versions
TP Link Systems Inc.	TL-WR845N v4	—	0 < TL-WR845N(UN)_V4_250401
TP-Link Systems Inc.	Archer C20 v6	—	0 < Archer C20(US)_V6_250630
TP-Link Systems Inc.	Archer MR200 v5	—	0 < Archer MR200(EU)_V5.20_1.3.0 Build 260319
TP-Link Systems Inc.	TL-WR850N v3	—	0 < TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048

Weakness (CWE)

CWE	Source	Description
CWE-798	cna	CWE-798 Use of Hard-coded Credentials

CVSS scores (1)

Score	Severity	Version	Source	Vector
5.2	MEDIUM	4.0	cna	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

References (9)