CVE-2020-6879: Some ZTE devices have input verification vulnerabilities.

Security readout for executives and security teams

Certain ZTE ZXHN Z500 and ZXHN F670L devices can accept invalid static route configuration input through their web management service. If reachable, an attacker may bypass browser-side restrictions and alter parameter values. The business concern is unauthorized network configuration change on affected devices, but the public bundle does not provide severity, CVSS, or exploitation details. Exposure is limited to environments running the affected ZTE device firmware versions, especially if the web management interface is reachable from untrusted networks. The sources do not state whether authentication is required, whether remote WAN access is typical, or whether default configurations expose the interface. Treat this as a targeted network-device hygiene issue. Prioritize remediation where affected ZTE devices manage production routing or expose web administration beyond trusted administrators. Urgency is harder to quantify because the public sources provide no CVSS score, no active exploitation evidence, and limited precondition details. Mitigation focus: Upgrade ZXHN Z500 to V1.0.1.1B1.1000 or later vendor-fixed firmware.; Upgrade ZXHN F670L to V1.1.10P2N2 or later vendor-fixed firmware.; Restrict web management access to trusted administrative networks only..

Prepared

Jun 5, 2026, 13:31 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.