Description
An unauthenticated command injection vulnerability in the /goform/fast_setting_internet_set endpoint of Tenda AC18 v15.03.05.05 allows attackers to execute arbitrary commands via a crafted payload injected into the mac parameter.
Published: 2026-07-01
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

This vulnerability is a CWE-77 OS command injection flaw that exists in the "/goform/fast_setting_internet_set"18 router firmware version 15.03.05.05. An attacker can supply a specially crafted payload in the "mac" parameter, causing the router to execute arbitrary operating system commands. The flaw does not require authentication and can be triggered by any host that can reach the router’s HTTP management interface.

Affected Systems

The affected device is the Tenda AC18 wireless router running firmware 15.03.05.05; no other vendors or product families are listed as impacted.

Risk and Exploitability

The CVSS score is 6.5, indicating medium severity. The EPSS score of less than 1% suggests a low but non‑zero likelihood of exploitation in the wild. The. Because the flaw is triggered via an unauthenticated HTTP request, the likely attack vector is network‑based, inferred from the lack of authentication and the exposed admin interface.

Generated by OpenCVE AI on July 17, 2026 at 13:26 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the router firmware to the latest release to remove the command injection flaw.
  • Restrict access to the router’s management interface by configuring the device’s firewall or access control lists to limit management traffic to trusted internal networks only.
  • Configure a host or network firewall to block or rate‑limit requests to the "/goform/fast.
  • Monitor system logs and network traffic for anomalous command execution or unexpected HTTP requests targeting the vulnerable endpoint.

Generated by OpenCVE AI on July 17, 2026 at 13:26 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 17 Jul 2026 13:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Firmware 15.03.05.05

Wed, 15 Jul 2026 23:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Firmware 15.03.05.05

Mon, 13 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated Command Injection in Tenda AC18 /goform/fast_setting_internet_set Endpoint

Sun, 12 Jul 2026 02:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Command Injection in Tenda AC18 /goform/fast_setting_internet_set Endpoint

Sat, 11 Jul 2026 02:15:00 +0000

Type Values Removed Values Added
Title Arbitrary Command Execution via Unauthenticated mac Parameter in Tenda AC18

Thu, 09 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Title Arbitrary Command Execution via Unauthenticated mac Parameter in Tenda AC18

Wed, 08 Jul 2026 08:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 '/goform/fast_setting_internet_set' Endpoint

Tue, 07 Jul 2026 09:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 '/goform/fast_setting_internet_set' Endpoint

Mon, 06 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated Command Injection in Tenda AC18 Router Firmware 15.03.05.05

Sun, 05 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Command Injection in Tenda AC18 Router Firmware 15.03.05.05

Sun, 05 Jul 2026 14:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router Firmware

Sat, 04 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router Firmware

Sat, 04 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection via mac Parameter in Tenda AC18 Router

Fri, 03 Jul 2026 23:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection via mac Parameter in Tenda AC18 Router

Fri, 03 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Fri, 03 Jul 2026 02:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Thu, 02 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Thu, 02 Jul 2026 14:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Thu, 02 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Wed, 01 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated OS Command Injection in Tenda AC18 Router

Wed, 01 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-77
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 01 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Description An unauthenticated command injection vulnerability in the /goform/fast_setting_internet_set endpoint of Tenda AC18 v15.03.05.05 allows attackers to execute arbitrary commands via a crafted payload injected into the mac parameter.
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-07-01T18:48:02.280Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-38142

cve-icon Vulnrichment

Updated: 2026-07-01T18:47:57.461Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-17T13:30:04Z

Weaknesses
  • CWE-77

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