CSRF in Zyxel Armor Z1 (Nbg6816) Firmware
CVE-2021-4030
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
EPSS: 0.004 (36.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Zyxel Armor Z1 (Nbg6816) Firmware — versions 1.00(AAWB.10)C0
- Zyxel Armor Z2 (Nbg6817) Firmware — versions 1.00(ABCS.10)C0
- Zyxel Nbg6816
- Zyxel Nbg6816_firmware — versions 1.00\(aawb.10\)c0
- Zyxel Nbg6817
- Zyxel Nbg6817_firmware
Weakness classification (CWE)
References
- security@zyxel.com.tw (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-4030?
- CVE-2021-4030 is a high-severity vulnerability in Zyxel Armor Z1 (Nbg6816) Firmware, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.0/10. Published 2022-02-24.
- How severe is CVE-2021-4030?
- High severity. CVSS v3 base score is 8.0 out of 10.