---
id: CVE-2026-86296
title: A vulnerability was determined in D-Link DIR-822A A_101
summary: >-
  A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability
  affects the function strcpy of the file udhcpcd/serverpacket.c of the
  component udhcpcd. This manipulation causes stack-based buffer overflow. The
  attack is poss…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
vendor: D-Link
product: DIR-822A
affected:
  - DIR-822A A_101
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T17:18:39.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86296'
references:
  - url: >-
      https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86296'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/906297'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399458'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399458/cti'
    label: cna@vuldb.com
  - url: 'https://www.dlink.com/'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-08T16:48:21.039247Z'
epss: 0.01346
epssPercentile: 0.70222
ingestedAt: '2026-09-08T15:33:26.976Z'
---

## Overview

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

## Remediation

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