What’s Vulnerable › Vulnerabilities

CVE-2026-22220: Improper Input Validation Leading to DoS on TP-Link Archer BE230

• Severity: medium (CVSS 4.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-03 · updated 2026-06-17
• Weakness: CWE-20

Description

A lack of proper input validation in the HTTP processing path in TP-Link Archer BE230 v1.2 (web modules) may allow a crafted request to cause the device’s web service to become unresponsive, resulting in a denial of service condition. A network adjacent attacker with high privileges could cause the device’s web interface to temporarily stop responding until it recovers or is rebooted. This issue affects Archer BE230 v1.2 < 1.2.4 Build 20251218 rel.70420.

Affected products

• TP-Link Systems Inc. Archer BE230 v1.2: before 1.2.4 — fixed in 1.2.4

How to fix

Upgrade to a fixed version: TP-Link Systems Inc. Archer BE230 v1.2 1.2.4. Check the vendor advisory for mitigations.

References

• https://www.tp-link.com/en/support/download/archer-be230/v1.20/#Firmware
• https://www.tp-link.com/sg/support/download/archer-be230/v1.20/#Firmware
• https://www.tp-link.com/us/support/download/archer-be230/v1.20/#Firmware
• https://www.tp-link.com/us/support/faq/4941/

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