Home › Exploited CVEs › CVE-2020-29583
CVE-2020-29583: Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability
Zyxel Multiple Products · in CISA KEV since 2021-11-03
2021-11-03added to KEV
2022-05-03federal remediation due date
90.16%EPSS exploit probability (30 days) 99.8th percentile
9.8 CRITICALCVSS 3.1
Unknownknown ransomware use
316days from NVD publication to KEV
What it is
Zyxel firewalls (ATP, USG, VM) and AP Controllers (NXC2500 and NXC5500) contain a use of hard-coded credentials vulnerability in an undocumented account ("zyfwp") with an unchangeable password.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-522 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2020-12-22 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2020-29583.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.