What is the severity of CVE-2021-20156?

CVE-2021-20156 has been rated as a medium severity vulnerability due to improper access control in the firmware.

How do I fix CVE-2021-20156?

To fix CVE-2021-20156, update the firmware of the Trendnet AC2600 TEW-827DRU to a patched version that addresses the improper access control.

What are the risks associated with CVE-2021-20156?

The risks associated with CVE-2021-20156 include the potential for a malicious user to install unauthorized firmware, compromising device security.

Which devices are affected by CVE-2021-20156?

CVE-2021-20156 affects the Trendnet AC2600 TEW-827DRU version 2.08B01 firmware.

Is there a known exploit for CVE-2021-20156?

As of now, there is no publicly known exploit specifically targeting CVE-2021-20156.

Vulnerability/
CVE-2021-20156

medium

6.5

CWE

347

30/12/2021

3/8/2024

CVE-2021-20156

First published: Thu Dec 30 2021(Updated: )

Trendnet AC2600 TEW-827DRU version 2.08B01 contains an improper access control configuration that could allow for a malicious firmware update. It is possible to manually install firmware that may be malicious in nature as there does not appear to be any signature validation done to determine if it is from a known and trusted source. This includes firmware updates that are done via the automated "check for updates" in the admin interface. If an attacker is able to masquerade as the update server, the device will not verify that the firmware updates downloaded are legitimate.

Credit: vulnreport@tenable.com

Affected Software	Affected Version	How to fix
TRENDnet TEW-827DRU	=2.08b01
TRENDnet TEW-827DRU firmware	=2.0

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Reference Links

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

Frequently Asked Questions

What is the severity of CVE-2021-20156?
CVE-2021-20156 has been rated as a medium severity vulnerability due to improper access control in the firmware.
How do I fix CVE-2021-20156?
To fix CVE-2021-20156, update the firmware of the Trendnet AC2600 TEW-827DRU to a patched version that addresses the improper access control.
What are the risks associated with CVE-2021-20156?
The risks associated with CVE-2021-20156 include the potential for a malicious user to install unauthorized firmware, compromising device security.
Which devices are affected by CVE-2021-20156?
CVE-2021-20156 affects the Trendnet AC2600 TEW-827DRU version 2.08B01 firmware.
Is there a known exploit for CVE-2021-20156?
As of now, there is no publicly known exploit specifically targeting CVE-2021-20156.

agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/author
agent/last-modified-date
agent/weakness
agent/severity
agent/references
agent/first-publish-date
agent/event
agent/description
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/trendnet
canonical/trendnet tew-827dru
version/trendnet tew-827dru/2.08b01
canonical/trendnet tew-827dru firmware
version/trendnet tew-827dru firmware/2.0

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