---
id: CVE-2026-90692
title: A vulnerability was detected in D-Link DIR-878 120B05
summary: >-
  A vulnerability was detected in D-Link DIR-878 120B05. This affects the
  function SetDynamicDNSIPv6Settings of the component Dynamic DNS IPv6 Settings.
  The manipulation of the argument IPv6Address/Hostname results in stack-based
  buffer ov…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
vendor: D-Link
product: DIR-878
affected:
  - DIR-878 120B05
published: '2026-09-14'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T14:17:29.170'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90692'
references:
  - url: >-
      https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-878/SetDynamicDNSIPv6Settings/README.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90692'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/915572'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403225'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403225/cti'
    label: cna@vuldb.com
  - url: 'https://www.dlink.com/'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T13:50:25.797298Z'
epss: 0.00473
epssPercentile: 0.40116
ingestedAt: '2026-09-14T15:23:07.464Z'
---

## Overview

A vulnerability was detected in D-Link DIR-878 120B05. This affects the function SetDynamicDNSIPv6Settings of the component Dynamic DNS IPv6 Settings. The manipulation of the argument IPv6Address/Hostname results in stack-based buffer overflow. The attack may be launched remotely.

## Remediation

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