CVE-2026-58457Public exploitNetwork attack vector

Unauthenticated root command execution via smacfilter_conf

Published Jul 1, 2026 · Updated Jul 1, 2026

OS command injection in Shenzhen Aitemi M300 Wi-Fi Repeater allows remote attackers to execute arbitrary shell commands through protocol.csp. The smacfilter_conf handler interpolates the name, enable, and mac GET parameters into uci command strings with sprintf(), then passes them to doSystemCmdComlib() without neutralizing shell metacharacters. The unauthenticated management endpoint is reachable from the device network, and injected commands run as root with full control of the repeater.

CVSS severity9.3
Critical
EPSS probability2.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Shenzhen Aitemi M300 Wi-Fi Repeater allows remote attackers to execute arbitrary shell commands through protocol.csp. The smacfilter_conf handler interpolates the name, enable, and mac GET parameters into uci command strings with sprintf(), then passes them to doSystemCmdComlib() without neutralizing shell metacharacters. The unauthenticated management endpoint is reachable from the device network, and injected commands run as root with full control of the repeater.

The record

CVE
CVE-2026-58457
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Shenzhen Aitemi E Commerce Co. Ltd.
Product
M300 Wi-Fi Repeater
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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?

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  1. Affected versionversion=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

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

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.

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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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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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