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TI-2026-05681 Aliases CVE-2026-6483GHSA-7rfm-rcv9-66r2

Wavlink WL-WN530H4 internet.cgi snprintf os command injection

Priority HIGH 72CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A vulnerability was found in Wavlink WL-WN530H4 20220721. This vulnerability affects the function strcat/snprintf of the file /cgi-bin/internet.cgi. The manipulation results in os command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026.04.16 is able to resolve this issue. Upgrading the affected component is recommended.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.13369 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed WL-WN530H4 (Wavlink): 2026.04.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
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
WavlinkWL-WN530H4202207212026.04.16Patch availableCNA
  • WL-WN530H4 VendorWavlink Affected 20220721 Fixed in 2026.04.16 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:o:wavlink:wl-wn530h4_firmware:*:*:*:*:*:*:*:*——Wavlink
  • cpe:2.3:o:wavlink:wl-wn530h4_firmware:*:*:*:*:*:*:*:* Versions — — ·Wavlink

Remediation

  • Fix · CNA WL-WN530H4 (Wavlink) Fixed in 2026.04.16

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6483
  2. 2026-10-03 Alias added: GHSA-7rfm-rcv9-66r2
  3. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Exploit 1

Patch 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-2026-83666 OS command injection in WAVLINK WN536AX6-A openvpn_cli handler 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