---
title: "Wavlink WN530HG4B - Buffer Overflow"
description: "Wavlink WN530HG4B M30HG4B_V260724 contains a heap-based buffer overflow caused by improper handling in api.cgi, letting remote attackers execute arbitrary code, exploit requires no special conditions."
url: https://panop.io/threat-heartbeat/CVE-2026-110958/
---

# CVE-2026-110958 Wavlink WN530HG4B - Buffer Overflow

Wavlink WN530HG4B M30HG4B\_V260724 contains a heap-based buffer overflow caused by improper handling in api.cgi, letting remote attackers execute arbitrary code, exploit requires no special conditions.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-110958)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Published

15 October 2026

Updated

16 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Upgrade to version 2026-09-24-841a51c6d5\_tclinux.bin.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-110958](https://nvd.nist.gov/vuln/detail/CVE-2026-110958)
- [https://drive.google.com/file/d/12OOh8g9YDCbD-Q4cc52J6TH9KuOoD44A/view?usp=drive\_link](https://drive.google.com/file/d/12OOh8g9YDCbD-Q4cc52J6TH9KuOoD44A/view?usp=drive_link)
- [https://vuldb.com/cve/CVE-2026-110958](https://vuldb.com/cve/CVE-2026-110958)
- [https://vuldb.com/submit/933388](https://vuldb.com/submit/933388)
- [https://vuldb.com/vuln/420571](https://vuldb.com/vuln/420571)
- [https://vuldb.com/vuln/420571/cti](https://vuldb.com/vuln/420571/cti)
- [https://dl.wavlink.com/firmware/RD/WN530BE2\_WAVLINK-WO-2026-09-24-841a51c6d5\_tclinux.bin](https://dl.wavlink.com/firmware/RD/WN530BE2_WAVLINK-WO-2026-09-24-841a51c6d5_tclinux.bin)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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