---
id: CVE-2026-5213
title: >-
  A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320,
  DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L,
  DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and
  DNS-1…
summary: >-
  A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320,
  DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L,
  DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and
  DNS-1…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
  - CWE-787
vendor: dlink
product: dnr-202l_firmware
affected:
  - dnr-202l_firmware <= 2026-02-05
  - dnr-326_firmware <= 2026-02-05
  - dns-1100-4_firmware <= 2026-02-05
  - dns-120_firmware <= 2026-02-05
  - dns-1200-05_firmware <= 2026-02-05
  - dns-1550-04_firmware <= 2026-02-05
  - dns-315l_firmware <= 2026-02-05
  - dns-320_firmware <= 2026-02-05
  - dns-320l_firmware <= 2026-02-05
  - dns-320lw_firmware <= 2026-02-05
  - dns-321_firmware <= 2026-02-05
  - dns-322l_firmware <= 2026-02-05
  - dns-323_firmware <= 2026-02-05
  - dns-325_firmware <= 2026-02-05
  - dns-326_firmware <= 2026-02-05
  - dns-327l_firmware <= 2026-02-05
  - dns-340l_firmware <= 2026-02-05
  - dns-343_firmware <= 2026-02-05
  - dns-345_firmware <= 2026-02-05
  - dns-726-4_firmware <= 2026-02-05
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5213'
references:
  - url: 'https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_168/168.md'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/780437'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/354350'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/354350/cti'
    label: cna@vuldb.com
  - url: 'https://www.dlink.com/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00715
epssPercentile: 0.52305
ingestedAt: '2026-07-25T21:03:57.800Z'
---

## Overview

A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The affected element is the function cgi_adduser_to_session of the file /cgi-bin/account_mgr.cgi. This manipulation of the argument read_list causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

## Affected

- `dnr-202l_firmware <= 2026-02-05`
- `dnr-326_firmware <= 2026-02-05`
- `dns-1100-4_firmware <= 2026-02-05`
- `dns-120_firmware <= 2026-02-05`
- `dns-1200-05_firmware <= 2026-02-05`
- `dns-1550-04_firmware <= 2026-02-05`
- `dns-315l_firmware <= 2026-02-05`
- `dns-320_firmware <= 2026-02-05`
- `dns-320l_firmware <= 2026-02-05`
- `dns-320lw_firmware <= 2026-02-05`
- `dns-321_firmware <= 2026-02-05`
- `dns-322l_firmware <= 2026-02-05`
- `dns-323_firmware <= 2026-02-05`
- `dns-325_firmware <= 2026-02-05`
- `dns-326_firmware <= 2026-02-05`
- `dns-327l_firmware <= 2026-02-05`
- `dns-340l_firmware <= 2026-02-05`
- `dns-343_firmware <= 2026-02-05`
- `dns-345_firmware <= 2026-02-05`
- `dns-726-4_firmware <= 2026-02-05`

## Remediation

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