7.2
HIGH
CVE-2021-20709
NEC Aterm WF1200CR/WG1200CR/WG2600HS Command Injection
Description

Improper validation of integrity check value vulnerability in NEC Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker with an administrative privilege to execute arbitrary OS commands by sending a specially crafted request to a specific URL.

INFO

Published Date :

April 26, 2021, 1:15 a.m.

Last Modified :

May 5, 2021, 8:02 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.2
Affected Products

The following products are affected by CVE-2021-20709 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.

ID Vendor Product Action
1 Nec aterm_wf1200cr_firmware
2 Nec aterm_wg1200cr_firmware
3 Nec aterm_wg2600hs_firmware
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-2021-20709.

URL Resource
https://jpn.nec.com/security-info/secinfo/nv21-010.html Mitigation Vendor Advisory
https://jvn.jp/en/jp/JVN29739718/index.html Third Party 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-2021-20709 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20709 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. 05, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://jpn.nec.com/security-info/secinfo/nv21-010.html No Types Assigned https://jpn.nec.com/security-info/secinfo/nv21-010.html Mitigation, Vendor Advisory
    Changed Reference Type https://jvn.jp/en/jp/JVN29739718/index.html No Types Assigned https://jvn.jp/en/jp/JVN29739718/index.html Third Party Advisory
    Added CWE NIST CWE-354
    Added CPE Configuration AND OR *cpe:2.3:o:nec:aterm_wf1200cr_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.3.2 OR cpe:2.3:h:nec:aterm_wf1200cr:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:nec:aterm_wg1200cr_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.3.3 OR cpe:2.3:h:nec:aterm_wg1200cr:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.5.1 OR cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20709 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-2021-20709 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.10 }} 0.00%

score

0.40900

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability