Chengdu Feiyuxing Technology VW2100/VEC10GP 1.0 B-MB3W202-210825-r11775 Weixin Auth Endpoint var/html/webserver handle_wechat_cn_wifi extend os command injection

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Chengdu Feiyuxing Technology VW2100 and VEC10GP 1.0 B-MB3W202-210825-r11775. Affected is the function handle_wechat_cn_wifi of the file var/html/webserver of the component Weixin Auth Endpoint. This manipulation of the argument extend causes os command injection. This vulnerability is tracked as CVE-2026-124580. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as very critical was found in Chengdu Feiyuxing Technology VW2100 and VEC10GP 1.0 B-MB3W202-210825-r11775. Affected by this vulnerability is the function handle_wechat_cn_wifi of the file var/html/webserver of the component Weixin Auth Endpoint. The manipulation of the argument extend with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-124580. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/08/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Chengdu Feiyuxing Technology

Name

• VEC10GP
• VW2100

Version

• 1.0 B-MB3W202-210825-r11775

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Accepted

• Submit #1038438: Chengdu Feiyuxing Technology Co., Ltd. (成都飞鱼星科技; adslr.com) VW2100 V1.0 / VEC10GP V1.0 (VROS) B-MB3W202-210825-r11775 and earlier builds Command Injection (by Walnut1337)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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