What is CVE-2022-0342?

CVE-2022-0342 is a critical-severity vulnerability in Zyxel Atp100, classified under Improper Authentication. CVSS score: 9.8/10. Published 2022-03-28.

How severe is CVE-2022-0342?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-0342 known to be exploited?

10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Zyxel Atp100

CVE-2022-0342

An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.

Vulnerability class: Broken Authentication

EPSS: 0.844 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

References

security@zyxel.com.tw (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2022-0342?: CVE-2022-0342 is a critical-severity vulnerability in Zyxel Atp100, classified under Improper Authentication. CVSS score: 9.8/10. Published 2022-03-28.
How severe is CVE-2022-0342?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-0342 known to be exploited?: 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.