CVE-2026-36738

Published May 13, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared U-speed
U-speed ac1200 Gigabit Wi-fi Router
Vendors & Products U-speed
U-speed ac1200 Gigabit Wi-fi Router
Type Values Removed Values Added
Title Incorrect Access Control on UART Interface of U‑SPEED AC1200 Gigabit Wi‑Fi Router
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Incorrect Access Control on UART Interface of U‑SPEED AC1200 Gigabit Wi‑Fi Router
Weaknesses CWE-284
Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 14, 2026, 1:53 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Analyzed
Published
May 13, 2026, 4:16 PM
Modified
Jun 30, 2026, 7:02 PM