CVE-2026-120240

WAVLINK WN553X1-B WireGuard CLI Group ioos sub_41A748 os command injection

A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. This issue affects the function sub_41A748 of the file /bin/ioos of the component WireGuard CLI Group Handler. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. 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_group_command_injection.md

CVE references

• https://vuldb.com/cve/CVE-2026-120240ADVISORY
• https://vuldb.com/submit/919251ADVISORY
• https://vuldb.com/vuln/429599REFERENCE
• https://vuldb.com/vuln/429599/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