CVE-2026-80148Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation
Updated under an hour ago ()
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It affects LANTRONIX SLC8000 and 4 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
LANTRONIX SLC8000 lantronix:slc8000 (from the name) | before 9.7.0.3 | CNA record |
LANTRONIX EMG8500 lantronix:emg8500 (from the name) | before 9.7.0.1 | CNA record |
LANTRONIX EMG7500 lantronix:emg7500 (from the name) | before 9.7.0.1 | CNA record |
LANTRONIX SLB882 lantronix:slb882 (from the name) | all versions | CNA record |
LANTRONIX SLC9000 lantronix:slc9000 (from the name) | before 9.7.0.2 | CNA record |
References
- https://revrb.net/2026/09/21/revrb-lantern.htmltechnical-description
- https://ts.lantronix.com/ftp/slc8000/9.7.0.3R3/patch
- https://ts.lantronix.com/ftp/emg/EMG_8500/9.7.0.1R2/patch
- https://ts.lantronix.com/ftp/emg/EMG_7500/9.7.0.1R2/patch
- https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/patch
- https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-webssh-ssrf-via-username-truncationthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.