CVE-2026-120281 Details
Description
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.
A stack-based buffer overflow vulnerability has been identified in the WAVLINK WN536AX6-A router, specifically in the OpenVPN handler within the file '/protocol.csp'. This vulnerability arises from the 'openvpn_ip' parameter being copied into a 16-byte stack buffer using an unchecked 'strcpy()' function, allowing for the overwriting of the return address and potentially leading to arbitrary code execution with root privileges. The issue can be exploited remotely, and the vulnerability has been made public.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 2, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/F-yyjy/cve/blob/main/WN536AX6-A_openvpn_ip.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/cve/CVE-2026-120281 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/919790 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/429625 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/429625/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| WAVLINK WN536AX6-A | V260507 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Nov 2, 2026 | New CVE Received | [email protected] |