CVE-2026-80148: Lantronix EMG7500

High severity, CVSS 8.6. EPSS: 0.6% chance of exploitation in the next 30 days.

Lantronix SLC8000 before firmware v9.7.0.3, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882 contain a server-side request forgery vulnerability in the WebSSH/WebTelnet listener that allows unauthenticated attackers to cause the affected device to establish SSH connections to attacker-controlled endpoints. The custom shellinaboxd builds its SSH connection target using a snprintf call with user-supplied input; by supplying an overlong username string an attacker causes the device IP suffix to be truncated, redirecting the resulting connection to an arbitrary host. Attackers can use this capability to enumerate or communicate with internal network endpoints that would otherwise be inaccessible.

Affected products

• Lantronix EMG7500: before 9.7.0.1 (fixed in 9.7.0.1)
• Lantronix EMG8500: before 9.7.0.1 (fixed in 9.7.0.1)
• Lantronix SLB882: any version
• Lantronix SLC8000: before 9.7.0.3 (fixed in 9.7.0.3)
• Lantronix SLC9000: before 9.7.0.2 (fixed in 9.7.0.2)

Published 2026-09-22. Last modified 2026-09-26.