High severity8.0NVD Advisory· Published Feb 24, 2022· Updated Jun 17, 2026

CVE-2021-4030

Description

A cross-site request forgery vulnerability in the HTTP daemon of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary commands if they coerce or trick a local user to visit a compromised website with malicious scripts.

Affected products

Zyxel/Nbg6816 Firmware
cpe:2.3:o:zyxel:nbg6816_firmware:1.00\(aawb.10\)c0:*:*:*:*:*:*:*
Zyxel/Nbg6817 Firmware
cpe:2.3:o:zyxel:nbg6817_firmware:*:*:*:*:*:*:*:*
Range: <1.00\(abcs.11\)c0
Zyxel/ARMOR Z1/Z2 firmwarellm-create
Zyxel/ARMOR Z1 (NBG6816) firmwarev5
Range: 1.00(AAWB.10)C0
Zyxel/ARMOR Z2 (NBG6817) firmwarev5
Range: 1.00(ABCS.10)C0

Patches

Vulnerability mechanics

References

www.zyxel.com/support/forgery-vulnerabilities-of-select-Armor-home-routers.shtmlnvdVendor Advisory

News mentions

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