Vulnerability · Published Mar 1, 2022 · Assigned by Zyxel
CVE-2021-4039
Critical 9.8
In plain English
A critical-severity OS command injection in NWA1100-NH 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 71.0% (higher than 99.4% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)71.0%top 0.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A command injection vulnerability in the web interface of the Zyxel NWA-1100-NH firmware could allow an attacker to execute arbitrary OS commands on the device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | NWA1100-NH firmware | 2.12(AASI.0)C0 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H