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CVE-2026-120229— WAVLINK WN553X1-B ioos sub_416B50 os command injection

Quick assessment

Affected

WAVLINK WN553X1-B

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WAVLINK WN553X1-B 固件版本 260403_2.0.0 中发现一个安全漏洞。该漏洞影响文件中的函数。攻击者可通过操纵参数触发操作系统命令注入。此攻击可远程实施。相关利用方式已向公众公开，可能被恶意利用。厂商已在漏洞披露初期收到通知。

CVSS 9.1 · Critical Updated Nov 01, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

WAVLINK WN553X1-B ioos sub_416B50 os command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This issue affects the function sub_416B50 of the file /bin/ioos. The manipulation of the argument file_id leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

OS命令中使用的特殊元素转义处理不恰当(OS命令注入)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
WAVLINK	WN553X1-B	260403_2.0.0	`cpe:2.3:a:wavlink:wn553x1-b::::::::`

II. Public POCs for CVE-2026-120229

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-120229

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Other References for CVE-2026-120229 (1)

CVE-2026-120229 | WAVLINK WN553X1-B 260403_2.0.0 /bin/ioos sub_416B50 file_id os command injection vdb-entry technical-description

Other References for CVE-2026-120229 (4)

https://github.com/senxitoyshuyi-ui/IOT-CVE/blob/main/vulns/WAVLINK_WN553X1-B_check_pwd_command_injection.md exploit
https://vuldb.com/cve/CVE-2026-120229 third-party-advisory
https://vuldb.com/vuln/429588/cti signature permissions-required
https://vuldb.com/submit/919153 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-120229

Same Patch Batch · WAVLINK · 2026-11-01 · 9 CVEs total

CVE-2026-120198	10.0 CRITICAL	WAVLINK WL-WN530BE1-A protocol.csp con_check_read_finish command injection
CVE-2026-120195	10.0 CRITICAL	WAVLINK WL-WN579A3-A Initial Setup Wizard adm.cgi set_wzdgwMesh os command injection
CVE-2026-120231	9.9 CRITICAL	WAVLINK WN553X1-B OpenVPN CLI ioos sub_416568 os command injection
CVE-2026-120230	9.9 CRITICAL	WAVLINK WN701AE ioos Web Backend del_vlan_group os command injection
CVE-2026-120228	9.9 CRITICAL	WAVLINK WN553X1-B ioos Service sub_416D88 os command injection
CVE-2026-120227	9.9 CRITICAL	WAVLINK WN701AE ioos Web Backend static_route_setting.sh del_staticrule os command injecti
CVE-2026-120197	9.9 CRITICAL	WAVLINK WL-WN530HG4B wapi.cgi port_forward os command injection
CVE-2026-120196	9.9 CRITICAL	WAVLINK WN579X3-D wapi.cgi port_forward os command injection

IV. Related Vulnerabilities

Same product: WN553X1-B

Same vendor: WAVLINK

Same weakness: CWE-78