AUGUST 4, 2026
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Case File

CVE-2020-28899

CRITICAL · CVSS 9.1 EPSS 1.63%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-16 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2020-28899
Severity
CRITICAL
CVSS
9.1
EPSS
1.63%

Original NVD Description

The Web CGI Script on ZyXEL LTE4506-M606 V1.00(ABDO.2)C0 devices does not require authentication, which allows remote unauthenticated attackers (via crafted JSON action data to /cgi-bin/gui.cgi) to use all features provided by the router. Examples: change the router password, retrieve the Wi-Fi passphrase, send an SMS message, or modify the IP forwarding to access the internal network.