OCTOBER 7, 2026
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Case File

CVE-2026-80154

CRITICAL · CVSS 9.6 EPSS 0.63% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-22 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

The vulnerability affects multiple firmware versions of Lantronix devices, allowing unauthenticated attackers to bypass authentication mechanisms in the web management portal. By exploiting predictable session token generation and file extension handling, attackers can gain elevated privileges, potentially compromising connected downstream devices. Organizations using the affected Lantronix products should prioritize immediate mitigation efforts to safeguard their networks against this critical threat.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-80154
Severity
CRITICAL
CVSS
9.6
EPSS
0.63%

Original NVD Description

All firmware versions of Lantronix SLC8000, SLC9000, EMG8500, EMG7500, SLB882, SLCx-03, and SLCx-02 contain an authentication bypass vulnerability in the web management portal that allows unauthenticated attackers to derive valid session tokens of logged-in users and bypass source IP and User-Agent validation. Session tokens are generated deterministically from the device model and the current time at one-second resolution, resulting in a small enumerable set of possible active tokens. Attackers can construct a crafted URI that exploits file extension handling in the web server path routing to bypass per-session source-address validation, then use a derived token from a different source address to gain elevated privileges on the affected device and potentially impact downstream serial-attached devices.