Vulnerability · Published Nov 2, 2026 · Assigned by VulDB

CVE-2026-120279WAVLINK WN536AX6-A openvpn_cli protocol.csp os command injection

Critical 10.0

In plain English

A critical-severity OS command injection in WN536AX6-A from WAVLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)2.0%top 19.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A flaw has been found in WAVLINK WN536AX6-A V260507. The affected element is an unknown function of the file /protocol.csp of the component openvpn_cli Handler. Executing a manipulation of the argument file_id can lead to os command injection. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

Affected products (as reported)

Vendor	Product	Versions
WAVLINK	WN536AX6-A	V260507

Weakness: CWE-78, CWE-77 · Vector: 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

References

VDB-429623 | WAVLINK WN536AX6-A openvpn_cli protocol.csp os command injection vdb-entry, technical-description
VDB-429623 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-120279 | CVE Analysis and Report third-party-advisory
Submit #919788 | WAVLINK WN536AX6 V260507 CWE-78 third-party-advisory
https://github.com/pipiyyb/cve/blob/main/WAVLINK%20WN536AX6-A/WN536AX6-A_file_id.md exploit