CVE-2026-19348Public exploitNetwork attack vector

Unauthenticated root command execution via smacfilter_conf parameters

Published Aug 9, 2026 · Updated Aug 9, 2026

Command injection in Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a allows remote attackers to execute arbitrary commands via HTTP. The commuos backend inserts unvalidated enable, name, and mac values from the smacfilter_conf request into uci command strings with sprintf, then passes those strings to doSystemCmdComlib. No authentication or user interaction is required, and commands run as root on the repeater, permitting full device compromise.

CVSS severity9.3
Critical
EPSS probability1.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a allows remote attackers to execute arbitrary commands via HTTP. The commuos backend inserts unvalidated enable, name, and mac values from the smacfilter_conf request into uci command strings with sprintf, then passes those strings to doSystemCmdComlib. No authentication or user interaction is required, and commands run as root on the repeater, permitting full device compromise.

The record

CVE
CVE-2026-19348
Published
Aug 9, 2026
Updated
Aug 9, 2026
Vendor
Shenzhen Aitemi E Commerce Co. Ltd.
Product
M300 Wi-Fi Repeater
Classifications
CWE-74, T1059, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=r0-ea7890a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Aitemi E Commerce Co. Ltd. · M300 Wi-Fi Repeaterversion=r0-ea7890a

Published CVSS scores

9.8TenableCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3TenableCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
10.0TenableAV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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