Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation (CVE-2026-80148) | HOL Guard CVE

High · CVSS 7.7CVE-2026-80148

Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation

Answer in brief

CVE-2026-80148 records a High severity (CVSS 7.7) vulnerability in Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation. The current sources do not mark it as known exploited. The current feed maps LANTRONIX/EMG7500 (generic), LANTRONIX/EMG8500 (generic), LANTRONIX/SLB882 (generic), LANTRONIX/SLC8000 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.7
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps LANTRONIX/EMG7500 (generic), LANTRONIX/EMG8500 (generic), LANTRONIX/SLB882 (generic), LANTRONIX/SLC8000 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
LANTRONIX/EMG7500generic	>=0 <9.7.0.1	9.7.0.1
LANTRONIX/EMG8500generic	>=0 <9.7.0.1	9.7.0.1
LANTRONIX/SLB882generic	*	Not reported
LANTRONIX/SLC8000generic	>=0 <9.7.0.2	9.7.0.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for LANTRONIX/EMG7500, LANTRONIX/EMG8500, LANTRONIX/SLB882.
Review the reported fix. Update LANTRONIX/EMG7500 to 9.7.0.1; LANTRONIX/EMG8500 to 9.7.0.1; LANTRONIX/SLC8000 to 9.7.0.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source description

Lantronix SLC8000 before firmware v9.7.0.3, 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.

Quoted source text, attributed separately from HOL analysis.