---
id: CVE-2021-31658
title: 'TP-Link TL-SG2005, TL-SG2008, etc'
summary: >-
  TP-Link TL-SG2005, TL-SG2008, etc. 1.0.0 Build 20180529 Rel.40524 is affected
  by an Array index error. The interface that provides the "device description"
  function only judges the length of the received data, and does not filter
  special…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H'
cwe:
  - CWE-129
vendor: tp-link
product: tl-sg2005_firmware
affected:
  - tl-sg2005_firmware = 1.0.0
  - tl-sg2008_firmware = 1.0.0
published: '2021-06-10'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-31658'
references:
  - url: 'https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-31658'
    label: cve@mitre.org
  - url: 'http://tp-link.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-31658'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01023
epssPercentile: 0.61994
ingestedAt: '2026-07-06T01:08:16.749Z'
---

## Overview

TP-Link TL-SG2005, TL-SG2008, etc. 1.0.0 Build 20180529 Rel.40524 is affected by an Array index error. The interface that provides the "device description" function only judges the length of the received data, and does not filter special characters. This vulnerability will cause the application to crash, and all device configuration information will be erased.

## Affected

- `tl-sg2005_firmware = 1.0.0`
- `tl-sg2008_firmware = 1.0.0`

## Remediation

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