---
id: CVE-2021-41442
title: >-
  An HTTP smuggling attack in the web application of D-Link DIR-X1860 before
  v1.10WWB09_Beta allows a remote unauthenticated attacker to DoS the web
  application via sending a specific HTTP packet.
summary: >-
  An HTTP smuggling attack in the web application of D-Link DIR-X1860 before
  v1.10WWB09_Beta allows a remote unauthenticated attacker to DoS the web
  application via sending a specific HTTP packet.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-444
vendor: dlink
product: dir-x1860_firmware
affected:
  - dir-x1860_firmware <= 1.03
published: '2022-02-09'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-41442'
references:
  - url: >-
      https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10283
    label: cve@mitre.org
  - url: 'https://www.dlink.com/en/security-bulletin/'
    label: cve@mitre.org
  - url: 'http://d-link.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'http://dir-x1860.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10283
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.dlink.com/en/security-bulletin/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.03712
epssPercentile: 0.89349
ingestedAt: '2026-07-06T02:09:23.201Z'
---

## Overview

An HTTP smuggling attack in the web application of D-Link DIR-X1860 before v1.10WWB09_Beta allows a remote unauthenticated attacker to DoS the web application via sending a specific HTTP packet.

## Affected

- `dir-x1860_firmware <= 1.03`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.