CVE-2026-120281

CRITICAL 10.0

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

CVSS Score

10.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	wavlink
Product	wn536ax6-a
Published	Nov 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

WAVLINK / WN536AX6-A

V260507

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/429625 vuldb.com: https://vuldb.com/vuln/429625/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120281 vuldb.com: https://vuldb.com/submit/919790 github.com: https://github.com/F-yyjy/cve/blob/main/WN536AX6-A_openvpn_ip.md

Credits

🔍 yyjy (VulDB User) VulDB CNA Team