CVE-2026-4346

March 26, 2026, 10:16 p.m.

5.1
Medium

Description

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.

Product(s) Impacted

Vendor Product Versions
Tp-link
  • Tl-wr850n
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-312
Cleartext Storage of Sensitive Information
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a tp-link tl-wr850n / / / / / / / /

References

https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware
https://www.tp-link.com/us/support/faq/5034/

Tags

CWE-312
f23511db-6c3e-4e32-a477-6aa17d310630
2026-03-26
CVE-2026-4346

CVSS Score

5.1 / 10

CVSS Data - 4.0

  • Attack Vector: PHYSICAL
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: HIGH
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: NONE
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/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

    View Vector String

Timeline

Published: March 26, 2026, 10:16 p.m.
Last Modified: March 26, 2026, 10:16 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

f23511db-6c3e-4e32-a477-6aa17d310630

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.