Tycon Systems TPDIN-Monitor-WEB2 (Update A)
CISA details CVE-2026-61884 (CVSS 9.8) in Tycon Systems TPDIN-Monitor-WEB2: unauthenticated access to power relays when credentials are unset; fixed in 2.4.5.
CISA updated its advisory for Tycon Systems TPDIN-Monitor-WEB2 firmware below 2.4.5, covering two vulnerabilities. CVE-2026-61884 (CVSS 9.8, CWE-306) lets any network attacker reach full device controls, including power relay management and reboots, on units left without configured HTTP credentials. CVE-2026-55985 exposes stored system credentials in cleartext to authenticated dashboard users, enabling compromise of other local systems. No public exploitation has been reported to CISA.
- Unauthenticated access allows relay control, reboot, and network changes with physical safety risk
- Cleartext credential disclosure (CVSS 4.3) could enable lateral compromise on the local network
- Update to firmware 2.4.5 or later; restrict device internet exposure
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-55985 | The web management interface in Tycon Systems TPDIN-Monitor-WEB2 stores and displays system credentials in cleartext on a certain configuration page accessible The web management interface in Tycon Systems TPDIN-Monitor-WEB2 stores and displays system credentials in cleartext on a certain configuration page accessible to authenticated users. Any party with access to the administrative dashboard can immediately read these credentials, which may be used to compromise other systems on the local network. NVD description · AI analysis pending | 5.3 | <1% | — | — | ||
| CVE-2026-61884 | The Tycon Systems TPDIN-Monitor-WEB2 ships without HTTP credentials configured, intended for an installer to set them on first use. The Tycon Systems TPDIN-Monitor-WEB2 ships without HTTP credentials configured, intended for an installer to set them on first use. On firmware 2.4.4 and earlier, a unit left in this unconfigured state serves the web management interface without requiring any login. An attacker with network access to such a unit can reach full device controls, including power relay management, device reboot, remote access service configuration, and network settings, which could allow disruption of connected infrastructure or physical damage to equipment. NVD description · AI analysis pending | 9.3 | <1% | — | — |
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Summary
Successful exploitation of these vulnerabilities could result in an attacker accessing sensitive credentials, disrupting connected infrastructure, or manipulating physical equipment, which could present a physical safety risk.
The following versions of Tycon Systems TPDIN-Monitor-WEB2 (Update A) are affected:
- TPDIN-Monitor-WEB2 <2.4.5 (CVE-2026-61884, CVE-2026-55985)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 9.8 | Tycon Systems | Tycon Systems TPDIN-Monitor-WEB2 | Missing Authentication for Critical Function, Cleartext Storage of Sensitive Information |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
CVE-2026-61884
The device ships without HTTP credentials configured, intended for an installer to set them on first use. On firmware 2.4.4 and earlier, a unit left in this unconfigured state serves the web management interface without requiring any login. An attacker with network access to such a unit can reach full device controls, including power relay management, device reboot, remote access service configuration, and network settings, which could allow disruption of connected infrastructure or physical damage to equipment.
Affected Products
Tycon Systems TPDIN-Monitor-WEB2 (Update A)
Vendor:
Tycon Systems
Product Version:
Tycon Systems TPDIN-Monitor-WEB2: <2.4.5
Product Status:
known_affected
Relevant CWE: CWE-306 Missing Authentication for Critical Function
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 4.0 | 9.3 | CRITICAL | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
CVE-2026-55985
The device's web management interface stores and displays system credentials in cleartext on a certain configuration page accessible to authenticated users. Any party with access to the administrative dashboard can immediately read these credentials, which may be used to compromise other systems on the local network.
Affected Products
Tycon Systems TPDIN-Monitor-WEB2 (Update A)
Vendor:
Tycon Systems
Product Version:
Tycon Systems TPDIN-Monitor-WEB2: <2.4.5
Product Status:
known_affected
Relevant CWE: CWE-312 Cleartext Storage of Sensitive Information
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| 4.0 | 5.3 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
Acknowledgments
- Abdiwelli Guled reported these vulnerabilities to CISA.
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-07-21
| Date | Revision | Summary |
|---|---|---|
| 2026-07-21 | 1 | Initial Publication |
| 2026-09-03 | 2 | Updated affected version range and vulnerability details based on vendor input. |
Legal Notice and Terms of Use
Text extracted automatically; images, tables and formatting may be missing. Original: https://www.cisa.gov/news-events/ics-advisories/icsa-26-202-01