Medium severity · published Dec 30, 2021
CVE-2021-20161
Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient protections for the UART functionality
6.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TF
Tew-827dru Firmware · Trendnet
2.08b01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20161
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20161
Third Party Advisory
https://www.tenable.com/security/research/tra-2021-54
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