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TI-2026-83666 Aliases CVE-2026-120279GHSA-x3j2-x298-hcr4

OS command injection in WAVLINK WN536AX6-A openvpn_cli handler

Priority HIGH 82CWE-77Published · Updated

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-77.

Summary

WAVLINK WN536AX6-A V260507 is affected. The openvpn_cli handler in /protocol.csp does not properly neutralize the file_id argument, which allows OS command injection (CWE-78). A remote attacker can exploit it without authentication, and a public exploit has been published.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01989 80th 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
Poc
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

VendorProductAffected versionsFixed inStatusSource
WavlinkWN536AX6-AV260507—No fix listedCNA
  • WN536AX6-A VendorWavlink Affected V260507 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:wavlink:wn536ax6-a:*:*:*:*:*:*:*:*——Wavlink
  • cpe:2.3:a:wavlink:wn536ax6-a:*:*:*:*:*:*:*:* Versions — — ·Wavlink

Remediation

The sources list no fixed version for WAVLINK WN536AX6-A.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-120279
  2. 2026-11-02 Alias added: GHSA-x3j2-x298-hcr4
  3. 2026-11-02 CISA SSVC decision points changed
  4. 2026-11-02 Priority changed: MEDIUM → HIGH

References

Exploit 1

  • 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-2026-83664 WAVLINK WN536AX6-A WireGuard CLI Group ioos sub_41a1d8 OS command injection 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