What’s Vulnerable › Vulnerabilities

CVE-2021-20712

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-26 · updated 2026-06-17

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.

Affected products

• NEC Corporation Aterm WG2600HS: through 1.5.1
• NEC Aterm Wx3000Hp Firmware: through 1.1.2

References

• https://jpn.nec.com/security-info/secinfo/nv21-010.html
• https://jvn.jp/en/jp/JVN29739718/index.html
• https://jpn.nec.com/security-info/secinfo/nv21-010.html
• https://jvn.jp/en/jp/JVN29739718/index.html

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