CVE-2021-20716
Buffalo Network Devices Debug Option Command Execution
Description
Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition.
INFO
Published Date :
April 28, 2021, 1:15 a.m.
Last Modified :
May 7, 2021, 5:43 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-20716
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-20716.
| URL | Resource |
|---|---|
| https://jvn.jp/en/vu/JVNVU90274525/index.html | Third Party Advisory |
| https://www.buffalo.jp/news/detail/20210427-02.html | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20716 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20716 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://jvn.jp/en/vu/JVNVU90274525/index.html No Types Assigned https://jvn.jp/en/vu/JVNVU90274525/index.html Third Party Advisory Changed Reference Type https://www.buffalo.jp/news/detail/20210427-02.html No Types Assigned https://www.buffalo.jp/news/detail/20210427-02.html Vendor Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration AND OR *cpe:2.3:o:buffalo:bhr-4rv_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.55 OR cpe:2.3:h:buffalo:bhr-4rv:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:fs-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.04 OR cpe:2.3:h:buffalo:fs-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr2-b11_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.32 OR cpe:2.3:h:buffalo:wbr2-b11:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr2-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.32 OR cpe:2.3:h:buffalo:wbr2-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr2-g54-kd_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.32 OR cpe:2.3:h:buffalo:wbr2-g54-kd:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr-b11_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.23 OR cpe:2.3:h:buffalo:wbr-b11:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.23 OR cpe:2.3:h:buffalo:wbr-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wbr-g54l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wbr-g54l:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr2-a54g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.25 OR cpe:2.3:h:buffalo:whr2-a54g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr2-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.23 OR cpe:2.3:h:buffalo:whr2-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr2-g54v_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.55 OR cpe:2.3:h:buffalo:whr2-g54v:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr3-ag54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.23 OR cpe:2.3:h:buffalo:whr3-ag54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.16 OR cpe:2.3:h:buffalo:whr-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:whr-g54-nf_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.10 OR cpe:2.3:h:buffalo:whr-g54-nf:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wla2-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.24 OR cpe:2.3:h:buffalo:wla2-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wla2-g54c_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.24 OR cpe:2.3:h:buffalo:wla2-g54c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wla-b11_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wla-b11:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wla-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wla-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wla-g54c_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wla-g54c:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wlah-a54g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.54 OR cpe:2.3:h:buffalo:wlah-a54g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wlah-am54g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.54 OR cpe:2.3:h:buffalo:wlah-am54g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wlah-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.54 OR cpe:2.3:h:buffalo:wlah-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli2-tx1-ag54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.53 OR cpe:2.3:h:buffalo:wli2-tx1-ag54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli2-tx1-amg54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.53 OR cpe:2.3:h:buffalo:wli2-tx1-amg54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli2-tx1-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wli2-tx1-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli3-tx1-amg54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.53 OR cpe:2.3:h:buffalo:wli3-tx1-amg54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli3-tx1-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.53 OR cpe:2.3:h:buffalo:wli3-tx1-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli-t1-b11_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wli-t1-b11:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wli-tx1-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.20 OR cpe:2.3:h:buffalo:wli-tx1-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wvr-g54-nf_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.02 OR cpe:2.3:h:buffalo:wvr-g54-nf:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wzr-g108_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.41 OR cpe:2.3:h:buffalo:wzr-g108:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wzr-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.41 OR cpe:2.3:h:buffalo:wzr-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wzr-hp-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.41 OR cpe:2.3:h:buffalo:wzr-hp-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wzr-rs-g54_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.55 OR cpe:2.3:h:buffalo:wzr-rs-g54:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wzr-rs-g54hp_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.55 OR cpe:2.3:h:buffalo:wzr-rs-g54hp:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20716 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-20716
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.44 }} 0.42%
score
0.86727
percentile