CVE-2026-82762
Received Received - Intake

OS Command Injection in Contec FX Series

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: JPCERT/CC

Description
Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in Contec FX5000 series, FX4000 series, and FX3000 series. If this vulnerability is exploited, an arbitrary OS command may be executed by an attacker who can log in to the product.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-82762
EUVD
EUVD-2026-77217

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
contec fx5000 *
contec fx4000 *
contec fx3000 *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-82762 is an OS command injection vulnerability in Contec FX5000, FX4000, and FX3000 series products. It occurs due to improper input validation, allowing attackers with login access to execute arbitrary OS commands. This could lead to unauthorized data access, system tampering, or malware execution.

Detection Guidance

Detecting this OS command injection vulnerability requires checking if your Contec FLEXLAN devices are running outdated firmware versions. Verify the firmware version of FX5000, FX4000, or FX3000 series devices against the recommended updates (1.12.00 for FX5000/FX4000, 1.14.00 for FX3000). Use network scanning tools to identify affected devices and their firmware versions.

Impact Analysis

If exploited, this vulnerability may allow attackers to steal sensitive data, modify system configurations, install malicious software, or disrupt operations. Systems running outdated firmware versions are at risk.

Mitigation Strategies

Immediately update the firmware of all affected Contec FLEXLAN devices to the latest versions specified by the vendor (1.12.00 for FX5000/FX4000, 1.14.00 for FX3000). Isolate or restrict access to these devices if updates cannot be applied immediately to prevent potential exploitation.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-82762. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart