CVE-2021-20712: Medium severity nec aterm wg2600hs vulnerability

Published Apr 26, 2021
·
Updated

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.

Affected Software

4 affected components
NEC Aterm WG2600HS firmware<=1.5.1
NEC Aterm WG2600HS
NEC Aterm WX3000HP firmware<=1.1.2
NEC Aterm WX3000HP

Event History

Apr 26, 2021
CVE Published
via MITRE·12:20 AM
Data Sourced
via MITRE·12:20 AM
DescriptionWeakness
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2021-20712.

2

What is the title of the vulnerability?

The title of the vulnerability is Improper access control vulnerability in NEC Aterm WG2600HS firmware Ver1.5.1 and earlier and Aterm WX3000HP firmware Ver1.1.2 and earlier.

3

What is the severity of CVE-2021-20712?

The severity of CVE-2021-20712 is medium, with a severity value of 5.3.

4

Which software versions are affected by this vulnerability?

NEC Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier are affected by this vulnerability.

5

How can an attacker exploit this vulnerability?

An attacker can exploit this vulnerability by accessing a device connected to the LAN side from the WAN side due to a defect in the IPv6 firewall function.

6

Is the NEC Aterm WG2600HS device vulnerable?

No, the NEC Aterm WG2600HS device is not vulnerable.

7

Is the NEC Aterm WX3000HP device vulnerable?

No, the NEC Aterm WX3000HP device is not vulnerable.

8

Are there any references for this vulnerability?

Yes, you can find more information about this vulnerability at the following references: [NEC Security Info](https://jpn.nec.com/security-info/secinfo/nv21-010.html) and [JVN](https://jvn.jp/en/jp/JVN29739718/index.html).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203