CVE-2020-29583

Katalog CVE

CVSS 9.8 · Critical KEV · sudah dieksploitasi EPSS 90,2%

Kerentanan Insufficiently Protected Credentials pada zyxel usg20-vpn firmware, zyxel usg20w-vpn firmware +28 lainnya. Skor CVSS 3.1 9.8 (Critical) menurut NVD. Masuk katalog KEV CISA pada 3 November 2021, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.

Rincian

Terbit di NVD

22 Desember 2020

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-522: Insufficiently Protected Credentials

EPSS (30 hari)

90,2% peluang dieksploitasi; lebih tinggi dari 99,7% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability

Masuk KEV

3 November 2021

Tenggat CISA

3 Mei 2022 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.zyxel.com/support/CVE-2020-29583.shtml advisory vendor
• https://www.zyxel.com/support/security_advisories.shtml advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29583 pemerintah AS
• https://www.eyecontrol.nl/blog/undocumented-user-account-in-zyxel-products.html broken link · advisory pihak ketiga
• https://www.secpod.com/blog/a-secret-zyxel-firewall-and-ap-controllers-could-allow-for-administrative-access-c... exploit · advisory pihak ketiga
• http://ftp.zyxel.com/USG40/firmware/USG40_4.60%28AALA.1%29C0_2.pdf broken link
• https://businessforum.zyxel.com/discussion/5252/zld-v4-60-revoke-and-wk48-firmware-release release notes
• https://businessforum.zyxel.com/discussion/5254/whats-new-for-zld4-60-patch-1-available-on-dec-15 release notes