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CVE-2026-58457— Shenzhen Aitemi M300 MT02 Unauthenticated OS Command Injection via protocol.csp

Quick assessment

Affected
Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Itemir M300 Wi-Fi Repeater是中国Itemir公司的一款Wi-Fi信号中继器。 Itemir M300 Wi-Fi Repeater存在命令注入漏洞，该漏洞源于未经过滤的输入通过commuos web后端的smacfilter_conf处理程序注入，攻击者可在name、enable或mac GET参数中添加分号分隔的有效载荷，进而通过sprintf()构造uci shell命令并经由doSystemCmdComlib()执行，导致未经验证的OS命令注入，可完全控制设备。

CVSS 9.8 · Critical EPSS 2.94% · P87

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater * affected
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I. Basic Information for CVE-2026-58457

Vulnerability Information
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Vulnerability Title
Shenzhen Aitemi M300 MT02 Unauthenticated OS Command Injection via protocol.csp
Source: CVE Program / CVE List V5
Vulnerability Description
Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02) contains an unauthenticated OS command injection vulnerability that allows network-adjacent attackers to execute arbitrary shell commands by injecting unsanitized input through the smacfilter_conf handler in the commuos web backend. Attackers can append semicolon-delimited payloads to the name, enable, or mac GET parameters, which are passed without sanitization into sprintf() to build uci shell commands executed via doSystemCmdComlib(), granting full root-level control of the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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
Vulnerability Title
Itemir M300 Wi-Fi Repeater 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Itemir M300 Wi-Fi Repeater是中国Itemir公司的一款Wi-Fi信号中继器。 Itemir M300 Wi-Fi Repeater存在命令注入漏洞，该漏洞源于未经过滤的输入通过commuos web后端的smacfilter_conf处理程序注入，攻击者可在name、enable或mac GET参数中添加分号分隔的有效载荷，进而通过sprintf()构造uci shell命令并经由doSystemCmdComlib()执行，导致未经验证的OS命令注入，可完全控制设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater * -

II. Public POCs for CVE-2026-58457

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6468 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-58457

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Proof of Concept for CVE-2026-58457 (1)

News Coverage for CVE-2026-58457 (1)

IV. Related Vulnerabilities

Same product: M300 Wi-Fi Repeater
Same vendor: Shenzhen Aitemi E Commerce Co. Ltd.
Same weakness: CWE-78

V. Comments for CVE-2026-58457

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