CVE-2021-20161

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.

CVSS v3 6.8 MEDIUM
CVSS v2.0 7.2 HIGH

6.8^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.tenable.com/security/research/tra-2021-54	Third Party Advisory
https://www.tenable.com/security/research/tra-2021-54	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*

cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*

History

21 Nov 2024, 05:46

Type	Values Removed	Values Added
References	~~() https://www.tenable.com/security/research/tra-2021-54 - Third Party Advisory~~	() https://www.tenable.com/security/research/tra-2021-54 - Third Party Advisory

12 Jul 2022, 17:42

Type	Values Removed	Values Added
CWE	~~CWE-326~~	CWE-306 CWE-287

07 Jan 2022, 17:40

Type	Values Removed	Values Added
References	~~(MISC) https://www.tenable.com/security/research/tra-2021-54 -~~	(MISC) https://www.tenable.com/security/research/tra-2021-54 - Third Party Advisory
CWE		CWE-326
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.2 v3 : 6.8
CPE		cpe:2.3:h:trendnet:tew-827dru:2.0:::::::* cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:::::::*

30 Dec 2021, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-12-30 22:15

Updated : 2024-11-21 05:46

NVD link : CVE-2021-20161

Mitre link : CVE-2021-20161

CVE.ORG link : CVE-2021-20161

JSON object : View

Products Affected

trendnet

tew-827dru
tew-827dru_firmware

CWE

CWE-287

Improper Authentication

CWE-306

Missing Authentication for Critical Function

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6.8 /10