What’s Vulnerable › Vulnerabilities

CVE-2020-28005

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-11-18 · updated 2026-06-17
• Weakness: CWE-120

Description

httpd on TP-Link TL-WPA4220 devices (hardware versions 2 through 4) allows remote authenticated users to trigger a buffer overflow (causing a denial of service) by sending a POST request to the /admin/syslog endpoint. Fixed version: TL-WPA4220(EU)_V4_201023

Affected products

• TP-Link Tl-Wpa4220 Firmware: before tl-wpa4220\(eu\)_v4_201023 — fixed in tl-wpa4220\(eu\)_v4_201023

How to fix

Upgrade to a fixed version: TP-Link Tl-Wpa4220 Firmware tl-wpa4220\(eu\)_v4_201023. Check the vendor advisory for mitigations.

References

• https://the-hyperbolic.com/posts/vulnerabilities-in-tlwpa4220/
• https://www.tp-link.com/us/security
• https://the-hyperbolic.com/posts/vulnerabilities-in-tlwpa4220/
• https://www.tp-link.com/us/security

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