Medium severity5.3NVD Advisory· Published Apr 26, 2021· Updated Jun 17, 2026

CVE-2021-20712

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

NEC/Aterm Wg2600hs Firmware
cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:*
Range: <=1.5.1
NEC/Aterm Wx3000hp Firmware
cpe:2.3:o:nec:aterm_wx3000hp_firmware:*:*:*:*:*:*:*:*
Range: <=1.1.2
NEC/Aterm WX3000HPllm-fuzzy
Range: <=1.1.2
NEC/Aterm WG2600HPllm-fuzzy
Range: <=1.5.1
NEC Corporation/NEC Aterm devicesv5
Range: Aterm WG2600HS firmware Ver1.5.1 and earlier, and Aterm WX3000HP firmware Ver1.1.2 and earlier

Patches

Vulnerability mechanics

References

jpn.nec.com/security-info/secinfo/nv21-010.htmlnvdMitigationVendor Advisory
jvn.jp/en/jp/JVN29739718/index.htmlnvdThird Party Advisory

News mentions

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