Description
U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Incorrect Access Control. The device exposes a UART interface that lacks authentication, authorization, or access control mechanisms. An attacker with physical access to the UART pins can connect to the interface and gain unrestricted access to device functionality.
Affected products
u-speed: t18-21k firmware; u-speed: t18-21k
References3
- github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-202… ExploitThird Party Advisory
- github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-202… ExploitThird Party Advisory
- github.com/N0tMilk/vulnerability-research Third Party Advisory
Metrics
- CVSS 3.1
-
6.8
MEDIUM
Score source: CNA
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 23 · as of 14 November 2026
- CWE
- CWE-284
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.