CVE-2026-120239

WAVLINK WN553X1-B WireGuard CLI ioos sub_419DA8 os command injection

A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_419DA8 of the file /bin/ioos of the component WireGuard CLI Handler. Performing a manipulation of the argument file_id results in os command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.

Affected

WAVLINK · WN553X1-B

CVSS v4.0 VULDB

8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULDB

9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 VULDB

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

1.69% chance of exploitation in the next 30 days, 77th percentile

Published

2026-11-01

Updated

2026-11-02

Proof-of-concept exploits (1)

• senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_wiregua…Repo stars 1★ · pushed 2026-08-24 · snapshot
  1 file

  WAVLINK WN553X1-B Router/WAVLINK_WN553X1-B_wireguard_cli_command_injection.md

CVE references

• https://vuldb.com/cve/CVE-2026-120239ADVISORY
• https://vuldb.com/submit/919250ADVISORY
• https://vuldb.com/vuln/429598REFERENCE
• https://vuldb.com/vuln/429598/ctiREFERENCE

References

• CVE Record
• NVD entry

Related

• CVE-2026-101000
• CVE-2026-101001
• CVE-2026-101002
• CVE-2026-101072
• CVE-2026-101073
• CVE-2026-101074