CVE-2026-80149
Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via rooturl Parameter
- State
- Published
- Severity
- 7.7 High
- Published
- Sep 22, 2026
- Updated
- Sep 26, 2026
- Reserved
- Aug 25, 2026
Description
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 uses the rooturl parameter from the web connection to determine its own IP address; by modifying this parameter an attacker redirects the SSH terminal connection to an arbitrary host or IP. Attackers can use this capability to enumerate or communicate with internal network endpoints that would otherwise be inaccessible.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N | VulnCheck |
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
SLC8000LANTRONIX |
|
EMG8500LANTRONIX |
|
EMG7500LANTRONIX |
|
SLB882LANTRONIX |
|
SLC9000LANTRONIX |
|
References
- Researcher Disclosuretechnical-description
- SLC8000 Firmwarepatch
- EMG8500 Firmwarepatch
- EMG7500 Firmwarepatch
- SLC9000 Firmwarepatch
- https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-webssh-ssrf-via-rooturl-parameterthird-party-advisory
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