CVE-2026-80154 Lantronix - Authentication Bypass

Lantronix SLC8000, EMG8500, EMG7500, SLB882, SLCx-03, and SLCx-02 firmware contain an authentication bypass caused by predictable session token generation and crafted URI exploiting file extension handling in web management portal, letting unauthenticated attackers bypass source IP and User-Agent validation to gain elevated privileges.

CVSS base score 9.6 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.63% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-330

Vendor fix

Update to the latest firmware version provided by Lantronix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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