---
id: CVE-2026-86509
title: A flaw has been found in D-Link DIR-895L A1_102b07
summary: >-
  A flaw has been found in D-Link DIR-895L A1_102b07. This impacts the function
  sendOffer/sendACK of the file udhcpcd/serverpacket.c of the component udhcpcd.
  This manipulation causes stack-based buffer overflow. The attack can only be
  don…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
vendor: D-Link
product: DIR-895L
affected:
  - DIR-895L A1_102b07
published: '2026-09-08'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:17:46.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86509'
references:
  - url: >-
      https://tzh00203.notion.site/D-Link-DIR-895L-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80dc8140e1502e4814d0
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86509'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/906298'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399662'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399662/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: 'no'
  technicalImpact: total
  timestamp: '2026-09-11T20:15:41.749149Z'
epss: 0.00433
epssPercentile: 0.36968
ingestedAt: '2026-09-08T15:33:26.981Z'
---

## Overview

A flaw has been found in D-Link DIR-895L A1_102b07. This impacts the function sendOffer/sendACK of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack can only be done within the local network. The exploit has been published and may be used.

## Remediation

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