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CVE-2026-120240— WAVLINK WN553X1-B WireGuard CLI Group ioos sub_41A748 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.

在 WAVLINK WN553X1-B V260403_2.0.0 固件中发现一个安全漏洞。该漏洞影响组件“WireGuard CLI 组处理器”中 文件内的 函数。攻击者通过篡改 或 参数，可触发操作系统命令注入漏洞。该攻击可从远程发起。目前，相关利用方法已公开披露，存在被利用的风险。厂商已在本漏洞披露初期收到通知。

CVSS 9.9 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
WAVLINK WN553X1-B V260403_2.0.0 affected
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I. Basic Information for CVE-2026-120240

Vulnerability Information
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Vulnerability Title
WAVLINK WN553X1-B WireGuard CLI Group ioos sub_41A748 os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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 V260403_2.0.0 cpe:2.3:a:wavlink:wn553x1-b:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-120240

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III. Intelligence Information for CVE-2026-120240

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Vendor Advisories for CVE-2026-120240 (1)

Other References for CVE-2026-120240 (4)

Same Patch Batch · WAVLINK · 2026-11-01 · 12 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-2026-120239 9.9 CRITICAL WAVLINK WN553X1-B WireGuard CLI ioos sub_419DA8 os command injection
CVE-2026-120238 9.9 CRITICAL WAVLINK WN553X1-B ovpn_file ioos sub_4162A8 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
CVE-2026-120229 9.1 CRITICAL WAVLINK WN553X1-B ioos sub_416B50 os command injection

IV. Related Vulnerabilities

Same product: WN553X1-B
Same vendor: WAVLINK
Same weakness: CWE-78