CVE-2026-4346: medium-severity vulnerability in TP-Link Systems Inc. TL-WR850N v3
Cleartext Storage of Administrative and Wi-Fi Credentials via Accessible Serial Interface in TP Link's TL-WR850N
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.1%
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.
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
Affected products
TP-Link Systems Inc. · TL-WR850N v3Related CVEs — TP-Link Systems Inc. TL-WR850N v3
In the same product, most dangerous first.