PT-2021-13816 · Trendnet · Trendnet Ac2600 Tew-827Dru

Jimi Sebree · Published 2021-12-30 · Updated 2022-07-12 · CVE-2021-20161

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Trendnet AC2600 TEW-827DRU version 2.08B01

Description: The issue concerns insufficient protections for the UART functionality. A malicious actor with physical access to the device can connect to the UART port via a serial connection, gaining a root shell with full control of the device without requiring a username or password.

Recommendations: For Trendnet AC2600 TEW-827DRU version 2.08B01, as a temporary workaround, consider restricting physical access to the device to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Missing Authentication

Weakness Enumeration

CWE-287

CWE-306

Related Identifiers

CVE-2021-20161

Affected Products

Trendnet Ac2600 Tew-827Dru

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-20161 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20161 · Vendor Advisory
• https://t.me/cibsecurity/34777 · Telegram Post
• https://tenable.com/security/research/tra-2021-54 · Note