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Critical · 10.0 Public exploit CVE-2026-110958 EUVD-2026-102150GHSA-456r-r3m7-3f5f

Wavlink WN530HG4B api.cgi heap-based overflow

Published Oct 15, 2026 · Updated Oct 15, 2026 · Assigned by VulDB

Vendor: WAVLINK Product: WN530HG4B

Description

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."

Affected products

VendorProductAffectedFixed
Wavlink WN530HG4B M30HG4B_V260724 2026-09-24-841a51c6d5_tclinux.bin

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References