CVE-2026-103906— Disabled TLS Certificate Validation Enables MITM Attacks

Quick assessment

Affected

am_automatic_machines am_club

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AM CLUB 移动应用程序中硬编码的 MQTT 凭证，使得已认证的攻击者能够连接到 MQTT 代理，并跨租户边界访问数据或执行操作。

CVSS 7.8 · High Updated Nov 10, 2026

Possible ATT&CK Techniques 2 AI

T1003 · OS Credential Dumping T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
am_automatic_machines	am_club	`1.7.194< 1.8.198`	affected

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Vulnerability Information

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Vulnerability Title

Disabled TLS Certificate Validation Enables MITM Attacks

Source: CVE Program / CVE List V5

Vulnerability Description

Use of hard-coded MQTT credentials in the AM CLUB mobile application allows an authenticated attacker to connect to the MQTT broker and access data or perform actions across tenant boundaries.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:U

Source: CVE Program / CVE List V5

Vulnerability Type

使用硬编码的凭证

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
am_automatic_machines	am_club	1.7.194 ~ 1.8.198	-

II. Public POCs for CVE-2026-103906

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-103906

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Other References for CVE-2026-103906 (1)

https://github.com/livieromarco/security-advisories/blob/main/advisories/CVE-2026-103906.md technical-description

https://www.cve.org/CVERecord?id=CVE-2026-103906

IV. Related Vulnerabilities

Same weakness: CWE-798