Vulnerability · Published Feb 22, 2022 · Assigned by Zyxel
CVE-2021-4029
High 8.8
In plain English
A high-severity OS command injection in ARMOR Z1 (NBG6816) firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 44.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A command injection vulnerability in the CGI program of the Zyxel ARMOR Z1/Z2 firmware could allow an attacker to execute arbitrary OS commands via a LAN interface.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | ARMOR Z2 (NBG6817) firmware | 1.00(ABCS.10)C0 |
| Zyxel | ARMOR Z1 (NBG6816) firmware | 1.00(AAWB.10)C0 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H