CVE-2022-0342 is a critical authentication bypass vulnerability affecting various Zyxel USG/ZyWALL, USG FLEX, ATP, VPN, and NSG series devices running specific firmware versions. This flaw allows an unauthenticated attacker to bypass web authentication and gain administrative access to the device. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, the vulnerability has high EPSS and FAUCET Risk scores, indicating a strong likelihood of exploitation, and exploit code is available via Nuclei templates, alongside significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.20, < 4.71CPE matchmatch criteria | cpe:2.3:o:zyxel:usg40_firmware:*:*:*:*:*:*:*:* | ||
>= 4.20, < 4.71CPE matchmatch criteria | cpe:2.3:o:zyxel:usg40w_firmware:*:*:*:*:*:*:*:* | ||
>= 4.20, < 4.71CPE matchmatch criteria | cpe:2.3:o:zyxel:usg60_firmware:*:*:*:*:*:*:*:* | ||
>= 4.20, < 4.71CPE matchmatch criteria | cpe:2.3:o:zyxel:usg60w_firmware:*:*:*:*:*:*:*:* | ||
>= 4.20, < 4.71CPE matchmatch criteria | cpe:2.3:o:zyxel:zywall_110_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.
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.