CVE-2021-4039 is a critical command injection vulnerability (CWE-78) in the web interface of Zyxel NWA-1100-NH firmware, allowing unauthenticated attackers to execute arbitrary OS commands. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV catalog, public exploit code exists on ExploitDB, and it has garnered significant community discussion, indicating potential for exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.12\(aasi.3\)c0CPE matchmatch criteria | cpe:2.3:o:zyxel:nwa1100-nh_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.