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CVE-2026-19348— Shenzhen Aitemi M300 Wi-Fi Repeater protocol.csp sprintf command injection

Quick assessment

Affected
Shenzhen Aitemi 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。 aitemi M300 Wi-Fi Repeater r0-ea7890a版本存在安全漏洞，该漏洞源于/protocol.csp?fname=net&opt=smacfilter_conf&function=set&act=add&name=test&enable=1文件中sprintf函数对enable/name/mac参数操作不当，可能允许远程攻击者执行命令注入攻击。

CVSS 9.8 · Critical EPSS 3.57% · P89

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a affected
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I. Basic Information for CVE-2026-19348

Vulnerability Information
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Vulnerability Title
Shenzhen Aitemi M300 Wi-Fi Repeater protocol.csp sprintf command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a. Impacted is the function sprintf of the file /protocol.csp?fname=net&opt=smacfilter_conf&function=set&act=add&name=test&enable=1. Performing a manipulation of the argument enable/name/mac results in command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.
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
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
aitemi M300 Wi-Fi Repeater 输入验证错误漏洞
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。 aitemi M300 Wi-Fi Repeater r0-ea7890a版本存在安全漏洞，该漏洞源于/protocol.csp?fname=net&opt=smacfilter_conf&function=set&act=add&name=test&enable=1文件中sprintf函数对enable/name/mac参数操作不当，可能允许远程攻击者执行命令注入攻击。
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 M300 Wi-Fi Repeater r0-ea7890a cpe:2.3:a:shenzhen_aitemi:m300_wi-fi_repeater:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19348

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11029 chars
Pro+ exclusive includes:
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
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-19348

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Vendor Advisories for CVE-2026-19348 (1)

Proof of Concept for CVE-2026-19348 (1)

Vendor Pages for CVE-2026-19348 (1)

Other References for CVE-2026-19348 (3)

IV. Related Vulnerabilities

Same product: M300 Wi-Fi Repeater
Same weakness: CWE-77

V. Comments for CVE-2026-19348

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