CVE-2026-22220

Unknown Unknown - Not Provided

Denial of Service via Input Validation Flaw in TP-Link Archer BE230 Web Module

Publication date: 2026-02-03

Last updated on: 2026-02-13

Assigner: TPLink

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-02-03

Last Modified

2026-02-13

Generated

2026-07-06

AI Q&A

2026-02-03

EPSS Evaluated

2026-07-05

NVD

CVE-2026-22220

EUVD

EUVD-2026-5216

Affected Vendors & Products

Vendor	Product	Version / Range
tp-link	archer_be230_firmware	to 1.2.4 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Compliance Impact

[{'type': 'paragraph', 'content': "The vulnerability causes a denial-of-service condition by making the device's web service unresponsive temporarily. It does not involve impacts on confidentiality, integrity, or availability beyond the DoS effect."}, {'type': 'paragraph', 'content': 'There is no information provided about how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.'}] [1]

Executive Summary

[{'type': 'paragraph', 'content': "The CVE-2026-22220 vulnerability affects the TP-Link Archer BE230 v1.2 router (versions prior to 1.2.4 Build 20251218 rel.70420) and is a medium-severity denial-of-service (DoS) issue caused by improper input validation in the device's HTTP processing path."}, {'type': 'paragraph', 'content': 'A crafted HTTP request can cause the router’s web service to become unresponsive, resulting in a temporary denial-of-service condition.'}, {'type': 'paragraph', 'content': 'An attacker who is network-adjacent and has high privileges can exploit this flaw to cause the device’s web interface to stop responding until it either recovers on its own or is rebooted.'}] [1]

Impact Analysis

This vulnerability can cause the TP-Link Archer BE230 router’s web interface to become temporarily unresponsive, resulting in a denial-of-service condition.

An attacker with network adjacency and high privileges can exploit this to disrupt management access to the device until it recovers or is rebooted.

There are no impacts on confidentiality or integrity, only availability is affected during the DoS condition.

Mitigation Strategies

To mitigate the CVE-2026-22220 vulnerability, it is recommended to update the TP-Link Archer BE230 router to firmware version 1.2.4 or later.

This update addresses the improper input validation issue in the HTTP processing path that can cause the device’s web service to become unresponsive.

Detection Guidance

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