Tycon Systems TPDIN-Monitor-WEB3 Multiple Vulnerabilities
First seen Sep 5, 2026 · Updated Sep 5, 2026 · CVSS 8.8
Tycon Systems TPDIN-Monitor-WEB3 firmware versions 2.2.9 and earlier contain three vulnerabilities—hard-coded credentials, CSRF, and missing authorization—that could allow an attacker to intercept sensitive data, perform state-changing operations, or extract system credentials, configurations, and flash contents. These devices are deployed worldwide in Critical Manufacturing and Energy sectors, and successful exploitation could enable man-in-the-middle attacks, factory resets, credential wipes, or full information disclosure. Tycon Systems has released firmware v2.4.2 to remediate all three issues.
Technical Analysis
CVE-2026-77847 (CWE-798) involves hard-coded credentials allowing local network attackers to intercept sensitive information (CVSSv3.1 6.5/CVSSv4 7.1). CVE-2026-82712 (CWE-352) is a CSRF vulnerability enabling attackers to perform unauthorized state-changing operations on the device via crafted requests requiring user interaction (CVSSv3.1 8.8). CVE-2026-82684 (CWE-862) is a missing authorization flaw permitting extraction of system credentials, configurations, or flash contents without proper access controls (CVSSv3.1 8.1). These are embedded/OT monitoring devices rather than general-purpose IT infrastructure, so direct impact to AI agent systems is unlikely; however, organizations using AI-driven OT/ICS monitoring or automation agents that ingest telemetry from these TPDIN-Monitor-WEB3 units should verify that agent pipelines do not trust or auto-consume unauthenticated data from affected devices, as compromised credentials or spoofed telemetry could feed corrupted inputs into automated decision-making systems.
Affected Systems
Tycon Systems TPDIN-Monitor-WEB3 firmware versions <=2.2.9. Fixed in firmware v2.4.2 (signed .tfw container for units already on v2.4.2) or v2.4.2T.hex (legacy Intel HEX format for units on v2.2.9 or earlier).
Indicators of Compromise
- No known IOCs published; no known public exploitation reported by CISA at this time.
Remediation Steps
- 1
Apply Vendor Firmware Update
Update all TPDIN-Monitor-WEB3 units running v2.2.9 or earlier to firmware v2.4.2 using the appropriate installer: the .tfw signed container for units already on v2.4.2, or the .hex legacy format for units currently on v2.2.9 (single-step upgrade, no intermediate version required).
- 2
Network Segmentation
Ensure control system devices are not accessible from the internet; isolate ICS/OT networks behind firewalls and separate them from business networks.
- 3
Secure Remote Access
If remote access is required, use up-to-date VPNs and recognize that VPN security depends on the security of connected endpoints.
- 4
Risk Assessment
Perform impact analysis and risk assessment prior to deploying any defensive measures or firmware updates in production ICS environments.
- 5
Contact Vendor for Support
Reach out to Tycon Systems directly via their contact page for additional guidance on firmware updates or device-specific mitigations.
CVE / Advisory IDs
Industries Most Exposed
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