---
id: CVE-2026-120189
title: D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file stack-based overflow
summary: >-
  A vulnerability was identified in D-Link DIR-505 1.10B02. Affected is the
  function save_upload_file/mp_upload_file of the file /usr/bin/tftpd of the
  component TFTP Upload Filename Handler. The manipulation leads to stack-based
  buffer ove…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-121
  - CWE-119
vendor: D-Link
product: DIR-505
affected:
  - DIR-505 1.10B02
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-11-05T15:36:02.311236Z'
exploitAvailable: true
published: '2026-11-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T15:36:19.632Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120189'
references:
  - url: 'https://vuldb.com/vuln/429528'
    label: >-
      VDB-429528 | D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file
      stack-based overflow
  - url: 'https://vuldb.com/vuln/429528/cti'
    label: 'VDB-429528 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-120189'
    label: CVE-2026-120189 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1027185'
    label: 'Submit #1027185 | D-Link DIR-505 1.10B02 Stack-based Buffer Overflow'
  - url: 'https://github.com/Walnut1337/DIR-505_filename_rce/tree/main/poc'
  - url: 'https://www.dlink.com/'
tags:
  - cve.org
  - exploit-available
epss: 0.01346
epssPercentile: 0.71597
ingestedAt: '2026-11-05T21:36:00.907Z'
---

## Overview

A vulnerability was identified in D-Link DIR-505 1.10B02. Affected is the function save_upload_file/mp_upload_file of the file /usr/bin/tftpd of the component TFTP Upload Filename Handler. The manipulation leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.

## Affected

- `DIR-505 1.10B02`

## Remediation

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