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4 vulnerabilities found for TL-WR850N v3 by TP-Link Systems Inc.
CVE-2026-12001 (GCVE-0-2026-12001)
Vulnerability from nvd – Published: 2026-07-27 20:08 – Updated: 2026-08-11 21:03
VLAI
EPSS
VEX
Title
Hardcoded Credential Vulnerability in Multiple TP-Link Router Models
Summary
A hardcoded credential
vulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, TL-WR902AC v4, 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 15:09 UTC
CWE
- CWE-798 - Use of Hard-coded Credentials
Assigner
References
11 references
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR850N v3 |
Affected:
0 , < TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048
(custom)
|
|
| TP-Link Systems Inc. | Archer C20 v6 |
Affected:
0 , < Archer C20(US)_V6_250630
(custom)
|
|
| TP Link Systems Inc. | TL-WR845N v4 |
Affected:
0 , < TL-WR845N(UN)_V4_250401
(custom)
|
|
| TP-Link Systems Inc. | Archer MR200 v5 |
Affected:
0 , < EU_V5.20_1.3.0 Build 260319
(custom)
|
|
| TP Link Systems Inc. | TL-WR902AC v4 |
Affected:
0 , < US_V4_0.9.1 Build 260810
(custom)
Affected: 0 , < EU_V4_0.9.3 Build 260728 (custom) |
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CVE-2026-4346 (GCVE-0-2026-4346)
Vulnerability from nvd – Published: 2026-03-26 21:16 – Updated: 2026-03-27 19:39
VLAI
EPSS
VEX
Title
Cleartext Storage of Administrative and Wi-Fi Credentials via Accessible Serial Interface in TP Link's TL-WR850N
Summary
The vulnerability affecting TL-WR850N v3 allows cleartext storage of administrative and Wi-Fi credentials in a region of the device’s flash memory while the serial interface remains enabled and protected by weak authentication. An attacker with physical access and the ability to connect to the serial port can recover sensitive information, including the router’s management password and wireless network key.
Successful exploitation can lead to full administrative control of the device and unauthorized access to the associated wireless network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-27 19:28 UTC
CWE
- CWE-312 - Cleartext storage of sensitive information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.tp-link.com/in/support/download/tl-wr… | patch |
| https://www.tp-link.com/us/support/faq/5034/ | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR850N v3 |
Affected:
0 , < V3_0.9.1 Build251205
(custom)
|
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CVE-2026-12001 (GCVE-0-2026-12001)
Vulnerability from cvelistv5 – Published: 2026-07-27 20:08 – Updated: 2026-08-11 21:03
VLAI
EPSS
VEX
Title
Hardcoded Credential Vulnerability in Multiple TP-Link Router Models
Summary
A hardcoded credential
vulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, TL-WR902AC v4, 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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 15:09 UTC
CWE
- CWE-798 - Use of Hard-coded Credentials
Assigner
References
11 references
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR850N v3 |
Affected:
0 , < TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048
(custom)
|
|
| TP-Link Systems Inc. | Archer C20 v6 |
Affected:
0 , < Archer C20(US)_V6_250630
(custom)
|
|
| TP Link Systems Inc. | TL-WR845N v4 |
Affected:
0 , < TL-WR845N(UN)_V4_250401
(custom)
|
|
| TP-Link Systems Inc. | Archer MR200 v5 |
Affected:
0 , < EU_V5.20_1.3.0 Build 260319
(custom)
|
|
| TP Link Systems Inc. | TL-WR902AC v4 |
Affected:
0 , < US_V4_0.9.1 Build 260810
(custom)
Affected: 0 , < EU_V4_0.9.3 Build 260728 (custom) |
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CVE-2026-4346 (GCVE-0-2026-4346)
Vulnerability from cvelistv5 – Published: 2026-03-26 21:16 – Updated: 2026-03-27 19:39
VLAI
EPSS
VEX
Title
Cleartext Storage of Administrative and Wi-Fi Credentials via Accessible Serial Interface in TP Link's TL-WR850N
Summary
The vulnerability affecting TL-WR850N v3 allows cleartext storage of administrative and Wi-Fi credentials in a region of the device’s flash memory while the serial interface remains enabled and protected by weak authentication. An attacker with physical access and the ability to connect to the serial port can recover sensitive information, including the router’s management password and wireless network key.
Successful exploitation can lead to full administrative control of the device and unauthorized access to the associated wireless network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-27 19:28 UTC
CWE
- CWE-312 - Cleartext storage of sensitive information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.tp-link.com/in/support/download/tl-wr… | patch |
| https://www.tp-link.com/us/support/faq/5034/ | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR850N v3 |
Affected:
0 , < V3_0.9.1 Build251205
(custom)
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