TI-2026-71563 Aliases CVE-2026-109109 GHSA-6v7p-w7m8-6jfj

Stack-based overflow in Wavlink WL-WN530BE1-A settings export CGI

MEDIUM 50CWE-119Published 2026-10-13 · Updated 2026-10-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Wavlink WL-WN530BE1-A from 251117 is affected. The strcpy call in the settings export CGI /cgi-bin/ExportAllSettings.cgi copies the HTTP_COOKIE or X-Cmd argument into a stack buffer, causing a stack-based buffer overflow (CWE-121). A remote attacker can trigger it without authentication. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00584 48th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Wavlink	WL-WN530BE1-A	251117	—	No fix listed	CNA

WL-WN530BE1-A VendorWavlink Affected 251117 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wavlink:wl-wn530be1-a::::::::	—	—	Wavlink

cpe:2.3:a:wavlink:wl-wn530be1-a:*:*:*:*:*:*:*:* Versions — — ·Wavlink

Remediation

The sources list no fixed version for Wavlink WL-WN530BE1-A.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Timeline

2026-10-13 Threatist record created from CVE-2026-109109
2026-10-13 Alias added: GHSA-6v7p-w7m8-6jfj
2026-10-14 CISA SSVC decision points changed

References

Exploit 1

https://gist.github.com/Rauzk/9ef4fe7574e5689386cc43139f4cf9e1

TI-2022-02298 WAVLINK WN535K2/WN535K3 nightled.cgi os command injection CVSS 3.1CRITICAL 9.8
TI-2026-83752 OS command injection in WAVLINK WN551X3-A DNS resolution handler CVSS 4.0CRITICAL 10.0
TI-2026-83751 WAVLINK WN551X3-A WireGuard CLI Group ioos os command injection CVSS 4.0CRITICAL 10.0
TI-2026-83668 Stack-based overflow in WAVLINK WN536AX6-A OpenVPN handler CVSS 4.0CRITICAL 10.0
TI-2026-83667 OS command injection in WAVLINK WN536AX6-A WireGuard handler CVSS 4.0CRITICAL 10.0
TI-2026-83666 OS command injection in WAVLINK WN536AX6-A openvpn_cli handler CVSS 4.0CRITICAL 10.0

See all 248 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences