CVE-2026-80148: Lantronix SLC8000/SLC9000/EMG8500/EMG7500 server-side request forgery

CVE-2026-80148 · Severity: high · CVSS 8.6 · Published 2026-09-22

Lantronix out-of-band management devices contain a server-side request forgery vulnerability in their WebSSH/WebTelnet service that allows unauthenticated attackers to redirect SSH connections to arbitrary hosts. These appliances are widely deployed in data centers, telecommunications networks, government infrastructure, and high-performance computing environments to provide emergency management access to network devices. An attacker exploiting this flaw can enumerate internal network endpoints, intercept communications, or pivot to otherwise inaccessible systems on the managed network.

Technologies: Lantronix EMG7500, Lantronix EMG8500, Lantronix SLB882, Lantronix SLC8000, Lantronix SLC9000, Lantronix SLCx-02, Lantronix SLCx-03. Vendors: Lantronix.

Quick answers

Is CVE-2026-80148 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-80148 being exploited in the wild.
How severe is CVE-2026-80148?
High severity, with a CVSS score of 8.6, published 22 September 2026.
Which products and versions are affected?
Lantronix EMG7500 before 9.7.0.1; Lantronix EMG8500 before 9.7.0.1; Lantronix SLB882 all; Lantronix SLC8000 before 9.7.0.3; and 3 more.
Is there a fix for CVE-2026-80148?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-80148 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-80148?
Check whether you run Lantronix EMG7500, Lantronix EMG8500, Lantronix SLB882 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in a custom shellinaboxd build where the SSH connection target is constructed using snprintf with user-supplied input from the WebSSH/WebTelnet listener. By supplying an overlong username string, an attacker causes integer truncation of the device IP suffix, allowing redirection to an attacker-controlled endpoint. The flaw requires no authentication and is reachable over the network, enabling reconnaissance and lateral movement within management-layer infrastructure.

Affected products

  • Lantronix SLC8000 before 9.7.0.3
  • Lantronix SLC9000 before 9.7.0.2
  • Lantronix EMG8500 before 9.7.0.1
  • Lantronix EMG7500 before 9.7.0.1
  • Lantronix SLB882 all
  • Lantronix SLCx-03 all
  • Lantronix SLCx-02 all

Timeline

  • 2026-09-22: disclosed
  • 2026-09-21: other: Independent research published

References

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