CVE-2021-28857: TP-Link Tl-WPA4220 Firmware

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

TP-Link's TL-WPA4220 4.0.2 Build 20180308 Rel.37064 username and password are sent via the cookie.

Affected products

• TP-Link Tl-WPA4220 Firmware: version 4.0.2 only

Published 2021-06-15. Last modified 2026-06-17.