CVE record · CVE-2026-80155

Lantronix Autonomous Out-of-Band Devices Unauthenticated Authentication Bypass via snprintf Path Truncation

CVSS 10.0 CriticalCriticalEPSS 0.010 · 63rd percentile

Critical, because:

CVSS score 10.0: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 22 Sept 2026, 15:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
LANTRONIX	SLC8000	affected before 9.7.0.5 custom Other versions: unaffected
LANTRONIX	EMG8500	affected before 9.7.0.1 custom Other versions: unaffected
LANTRONIX	EMG7500	affected before 9.7.0.1 custom Other versions: unaffected
LANTRONIX	SLB882	affected * custom Other versions: unknown
LANTRONIX	SLCx-03	affected * custom Other versions: unknown
LANTRONIX	SLCx-02	affected * custom Other versions: unaffected
LANTRONIX	SLC9000	affected before 9.7.0.2 custom Other versions: unaffected

Identifiers: CVE-2026-80155
CNA: VulnCheck
Weakness (CWE): CWE-22
Tags: LANTRONIX SLC8000
LANTRONIX EMG8500
LANTRONIX EMG7500
LANTRONIX SLB882
LANTRONIX SLCx-03
LANTRONIX SLCx-02
LANTRONIX SLC9000
Path traversal
Published: 22 Sept 2026
Updated: 24 Sept 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
10.0	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	CNA (VulnCheck)Used for this record
10.0	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.010, the 63rd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 22 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

revrb.net/2026/09/21/revrb-lantern.html technical-description
ts.lantronix.com/ftp/slc8000/9.7.0.5R2/ patch
ts.lantronix.com/ftp/emg/EMG_8500/9.7.0.1R2/ patch
ts.lantronix.com/ftp/emg/EMG_7500/9.7.0.1R2/ patch
ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/ patch
www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-unauthenticated-authentication-bypass-via-snprintf-path-truncation third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.