OCTOBER 7, 2026
Live Feed
Back to database
Case File

CVE-2026-80155

CRITICAL · CVSS 10 EPSS 1.03% Public Exploit

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

CyberRota Analysis

AI-Generated

The vulnerability affects the web management portal of several Lantronix devices, allowing unauthenticated attackers to bypass authentication and access sensitive configuration files, as well as upload malicious files leading to remote code execution. This critical flaw can result in a complete loss of confidentiality, integrity, and availability of the affected devices, with potential repercussions for connected systems. Organizations using these devices should prioritize immediate patching or mitigation strategies to safeguard their networks against exploitation.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2026-80155
Severity
CRITICAL
CVSS
10
EPSS
1.03%

Original NVD Description

Lantronix SLC8000 before firmware v9.7.0.5, 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 an authentication bypass vulnerability in the web management portal upload endpoint that allows unauthenticated attackers to read sensitive configuration files and upload files to arbitrary filesystem locations, leading to remote code execution. The web configuration server constructs the session cookie file path using snprintf with a fixed-size buffer; by supplying a cookie value of a specific length an attacker causes the path to truncate at the required delimiter and leverages path traversal to redirect authentication validation to an arbitrary on-disk file such as the local user database, bypassing all session checks. Attackers can use this vulnerability to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-connected devices.