5.3
MEDIUM
CVE-2021-20712
NEC Aterm IPv6 Firewall Access Control Vulnerability
Description

Improper access control vulnerability in NEC Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier allows a device connected to the LAN side to be accessed from the WAN side due to the defect in the IPv6 firewall function.

INFO

Published Date :

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

Last Modified :

Nov. 21, 2024, 5:47 a.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-20712 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_wg2600hs_firmware
2 Nec aterm_wx3000hp_firmware
3 Nec aterm_wg2600hs
4 Nec aterm_wx3000hp
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-2021-20712.

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
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-2021-20712 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20712 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://jpn.nec.com/security-info/secinfo/nv21-010.html
    Added Reference https://jvn.jp/en/jp/JVN29739718/index.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-863 NVD-CWE-Other
  • Initial Analysis by [email protected]

    May. 05, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    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-863
    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:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:nec:aterm_wx3000hp_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.1.2 OR cpe:2.3:h:nec:aterm_wx3000hp:-:*:*:*:*:*:*:*
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-2021-20712 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-2021-20712 weaknesses.

Exploit Prediction

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

0.07 }} -0.02%

score

0.33011

percentile

CVSS31 - Vulnerability Scoring System
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