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CVE-2026-4346 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  TPLink
CVSS-B 5.1 MEDIUM
Vector:  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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware TPLink
https://www.tp-link.com/us/support/faq/5034/ TPLink

Weakness Enumeration

CWE-ID CWE Name Source
CWE-312 Cleartext Storage of Sensitive Information TPLink  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-4346
NVD Published Date:
03/26/2026
NVD Last Modified:
03/26/2026
Source:
TPLink