EUVD-2026-16452CVSS 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/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
Lifecycle Timeline
4Description
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.
Analysis
Cleartext credential storage in TP-Link TL-WR850N v3 flash memory combined with weak serial interface authentication enables attackers with physical access to extract administrative and Wi-Fi credentials, leading to full device compromise and unauthorized network access. The vulnerability is addressed by a vendor patch, and exploitation requires physical proximity to the device's serial port with no public exploit code identified at time of analysis.
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Remediation
Within 30 days: Identify affected systems running TL-WR850N and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.
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External POC / Exploit Code
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