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Findings

Vulnerability · CVE-2026-58457

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

Published Sep 4, 2026 · corrected/updated Sep 4, 2026 · Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater · evidence confidence very high

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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-58457 is a unknown public vulnerability record for Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater. CISA lists it as known exploited. Published remediation guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater. Published remediation guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: EPSS 2.9%. CISA lists it as known exploited. Sources contributing to this record: cve_org, epss, vulncheck_kev. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Confirmed in CISA KEV since Sep 4, 2026. Listed in CISA KEV and VulnCheck KEV.

  • Patch and remediation

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 4, 2026 · VulnCheck KEV

    Detected

    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 passe

  2. Sep 4, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected

  • vendor Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeaterversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-58457

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-58457

    30-day exploitation probability 2.9%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2026-58457

    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 we

    vulncheck.com

References