VULNERABILITY INTELLIGENCE

CVE-2021-20712

CVSS score5.3 MEDIUM

EPSS probability0.80%

CISA KEVNot currently listed

Published2021-04-26

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Weakness classification

nvd@nist.gov: NVD-CWE-Other

Primary references

vultures@jpcert.or.jp — Mitigation, Vendor Advisory
vultures@jpcert.or.jp — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory