CVE-2026-36738: n/a
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.
AI Analysis
Technical Summary
CVE-2026-36738 describes an incorrect access control vulnerability in the U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0. The device exposes a UART interface that lacks any authentication, authorization, or access control mechanisms. This allows an attacker with physical access to the UART pins to connect directly and gain unrestricted access to device functionality. The vulnerability is classified under CWE-284 (Improper Access Control) and has a CVSS v3.1 base score of 6.8, reflecting high impact on confidentiality, integrity, and availability but requiring physical access to exploit.
Potential Impact
Successful exploitation allows an attacker with physical access to the device's UART interface to fully control the router, potentially compromising confidentiality, integrity, and availability of the device and its network traffic. This could lead to unauthorized configuration changes, data interception, or device disruption.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Since exploitation requires physical access to the UART interface, physical security controls to restrict access to the device hardware are recommended. Monitor vendor advisories for any future updates or patches addressing this issue.
CVE-2026-36738: n/a
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.
CVSS v3.1
Score 6.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-36738 describes an incorrect access control vulnerability in the U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0. The device exposes a UART interface that lacks any authentication, authorization, or access control mechanisms. This allows an attacker with physical access to the UART pins to connect directly and gain unrestricted access to device functionality. The vulnerability is classified under CWE-284 (Improper Access Control) and has a CVSS v3.1 base score of 6.8, reflecting high impact on confidentiality, integrity, and availability but requiring physical access to exploit.
Potential Impact
Successful exploitation allows an attacker with physical access to the device's UART interface to fully control the router, potentially compromising confidentiality, integrity, and availability of the device and its network traffic. This could lead to unauthorized configuration changes, data interception, or device disruption.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Since exploitation requires physical access to the UART interface, physical security controls to restrict access to the device hardware are recommended. Monitor vendor advisories for any future updates or patches addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04a508cbff5d8610e80444
Added to database: 05/13/2026, 16:21:28 UTC
Last enriched: 05/20/2026, 18:47:47 UTC
Last updated: 07/08/2026, 10:28:22 UTC
Views: 61
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