CVE-2026-79589

Description

The WIFI4 N300 router (Model: T1 Pro) v1.0.0 by U-speed contains an insecure access control flaw that allows an attacker to gain unauthenticated root shell. The vulnerability is caused by the exposure of the UART debugging interface having a lack of authentication, authorization and access control functionality. Once the interface is soldered and connected to the attacker, they gain root privilege to the system.

References

• https://github.com/milkinit/cve-disclosures/tree/main/IoT/CVE-2026-79589
• https://www.u-speed.com.cn/en/product_details?production=N300&production_miaoshu=1%E6%89%9816%E4%B8%BB%E5%85%89%E7%8C%AB%2C%E4%BC%81%E4%B8%9A%E5%85%A8%E5%85%89%E4%B8%A4%E5%8D%83%E5%85%86%E6%8E%A5%E5%85%A5