---
id: CVE-2026-110958
title: A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724
summary: >-
  A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724. The impacted
  element is an unknown function of the file api.cgi. The manipulation results
  in heap-based buffer overflow. It is possible to launch the attack remotely.
  The ex…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-122
vendor: Wavlink
product: WN530HG4B
affected:
  - WN530HG4B M30HG4B_V260724
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:25.333'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110958'
references:
  - url: >-
      https://dl.wavlink.com/firmware/RD/WN530BE2_WAVLINK-WO-2026-09-24-841a51c6d5_tclinux.bin
    label: cna@vuldb.com
  - url: >-
      https://drive.google.com/file/d/12OOh8g9YDCbD-Q4cc52J6TH9KuOoD44A/view?usp=drive_link
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-110958'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/933388'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/420571'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/420571/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-15T18:34:10.216285Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/shlln/CVE-2026-110958'
  checkedAt: '2026-10-15T19:26:21.075Z'
ingestedAt: '2026-10-15T16:13:11.220Z'
---

## Overview

A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724. The impacted element is an unknown function of the file api.cgi. The manipulation results in heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to resolve this issue. The affected component should be upgraded. The vendor confirms: "We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked."

## Remediation

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