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Lantronix SLC8000/SLC9000 and EMG Series Undocumented mfc eeprom read Command Passes Input Directly to system() via the CLI Interface, Reachable by Any Authenticated User for Root Command Execution

Last refreshed2026-09-28

Status: NEW  |  Advisory ID: CVE-2026-80143

Key Details

CVECVE-2026-80143
CVSS Score / Version9.9 (Critical) / CVSS v3.1
Updated2026-09-24
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Classified asCWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'))

What to Know

Lantronix SLC8000/SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a command injection vulnerability that allows authenticated attackers to execute arbitrary shell commands as root by exploiting an undocumented mfc eeprom read command that passes unsanitized user input to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and inject malicious commands through the unsanitized parameter to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-attached devices. (NVD)

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-80143
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-80143