---
id: CVE-2026-107441
title: >-
  An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E
  firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated
  adjacent attacker  to exploit the flaw and potentially execute OS commands via
  a crafted …
summary: >-
  An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E
  firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated
  adjacent attacker  to exploit the flaw and potentially execute OS commands via
  a crafted …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-787
vendor: Zyxel
product: GS1900-24E firmware
affected:
  - gs1900-24e_firmware <= 2.90(AAHK.2)C0
  - gs1900-8_firmware <= 2.90(AAHH.2)C0
  - gs1900-8hp_firmware <= 2.90(AAHI.2)C0
  - gs1900-10hp_firmware <= 2.90(AAZI.2)C0
  - gs1900-16_firmware <= 2.90(AAHJ.2)C0
  - gs1900-24_firmware <= 2.90(AAHL.2)C0
  - gs1900-24ep_firmware <= 2.90(ABTO.2)C0
  - gs1900-hpv2_firmware <= 2.90(ABTP.2)C0
  - gs1900-48_firmware <= 2.90(AAHN.2)C0
  - gs1900-48hpv2_firmware <= 2.90(ABTQ.2)C0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-03T00:00:00+00:00'
exploitAvailable: true
published: '2026-11-03'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T04:55:43.911Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-107441'
references:
  - url: >-
      https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-gs1900-series-switches-11-03-2026
tags:
  - cve.org
  - exploit-available
epss: 0.00293
epssPercentile: 0.2203
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/foxcornlab/zyxel-gs1900-scanner'
  checkedAt: '2026-11-07T18:01:26.656Z'
ingestedAt: '2026-11-05T21:36:00.727Z'
---

## Overview

An out-of-bounds write vulnerability in the CGI program of Zyxel GS1900-24E firmware versions through 2.90(AAHK.2)C0 could allow an unauthenticated adjacent attacker  to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

## Affected

- `gs1900-24e_firmware <= 2.90(AAHK.2)C0`
- `gs1900-8_firmware <= 2.90(AAHH.2)C0`
- `gs1900-8hp_firmware <= 2.90(AAHI.2)C0`
- `gs1900-10hp_firmware <= 2.90(AAZI.2)C0`
- `gs1900-16_firmware <= 2.90(AAHJ.2)C0`
- `gs1900-24_firmware <= 2.90(AAHL.2)C0`
- `gs1900-24ep_firmware <= 2.90(ABTO.2)C0`
- `gs1900-hpv2_firmware <= 2.90(ABTP.2)C0`
- `gs1900-48_firmware <= 2.90(AAHN.2)C0`
- `gs1900-48hpv2_firmware <= 2.90(ABTQ.2)C0`

## Remediation

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