CVE-2026-36738
Medium
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.
SeverityMedium
CVSS6.8
Exploit probability—
ProductU-speed T18-21k Firmware
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-284Improper access control
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| u-speed t18-21k_firmware | 1.0 | — |
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