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Public vulnerability disclosure

CVE-2026-120281

WAVLINK WN536AX6-A OpenVPN protocol.csp strcpy stack-based overflow

publishedCWE-121CWE-119

A vulnerability was found in WAVLINK WN536AX6-A V260507. This affects the function strcpy of the file /protocol.csp of the component OpenVPN Handler. The manipulation of the argument openvpn_ip results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.

Investigate in Cyber JSONMarkdown
Technical severity10.0 criticalCVSS 4.0 · CNA: VulDB
Published2026-11-02Source updated 2026-11-02
Collected2026-11-021 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

ProductVersionsAuthority
WN536AX6-A
WAVLINK 		V260507 (affected) CNA: VulDB

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

Version / scoreVectorAuthority
4.0 / 10.0
critical		 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:PCNA: VulDB
3.1 / 10.0
critical		 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:RCNA: VulDB
3.0 / 10.0
critical		 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:RCNA: VulDB
2.0 / 10.0
critical		 AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:URCNA: VulDB

Exploit evidence

References