What’s Vulnerable › Vulnerabilities

CVE-2021-20161

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-30 · updated 2026-06-17
• Weakness: CWE-287

Description

Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient protections for the UART functionality. A malicious actor with physical access to the device is able to connect to the UART port via a serial connection. No username or password is required and the user is given a root shell with full control of the device.

Affected products

• Trendnet AC2600 TEW-827DRU: 2.08b01

References

• https://www.tenable.com/security/research/tra-2021-54
• https://www.tenable.com/security/research/tra-2021-54

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