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Digi International PortServer TS, Digi One SP IA

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CVEVulnerabilityXSSCritical

Overview

Digi International has identified serious vulnerabilities in several of its products, including the PortServer TS, Digi One SP, and Digi One SP IA. These flaws could allow attackers to bypass authentication, access restricted resources, and even inject malicious scripts into the system. Specifically, CVE-2026-12352 enables unauthenticated users to gain unauthorized access, while CVE-2026-12948 allows authenticated administrators to execute scripts via the web management interface. Users of affected devices, particularly in critical sectors like manufacturing and transportation, are urged to upgrade to newer products or implement immediate security measures to mitigate risks. Failure to address these vulnerabilities could lead to significant security breaches.

Key Takeaways

  • Affected Systems: Digi International PortServer TS, Digi One SP, Digi One SP IA, Digi One IA (all versions prior to Firmware_2025)
  • Action Required: Digi International recommends upgrading to Digi Connect EZ or Digi Connect EZ TS.
  • Timeline: Newly disclosed

Original Article Summary

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to bypass authentication and gain access to restricted resources, obtain credentials, and inject malicious scripts. The following versions of Digi International PortServer TS, Digi One SP IA are affected: PortServer TS Digi One SP Digi One SP IA Digi One IA CVSS Vendor Equipment Vulnerabilities v3 5.9 Digi International Digi International PortServer TS, Digi One SP IA Incorrect Authorization, Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Background Critical Infrastructure Sectors: Critical Manufacturing, Communications, Information Technology, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-12352 The vulnerability allows an unauthenticated actor to bypass authentication and gain access to restricted resources on the device. View CVE Details Affected Products Digi International PortServer TS, Digi One SP IA Vendor: Digi International Product Version: Digi International PortServer TS: <Firmware_2025, Digi International Digi One SP: <Firmware_2025, Digi International Digi One SP IA: <Firmware_2025, Digi International Digi One IA: <Firmware_2025 Product Status: known_affected Remediations Mitigation Digi International recommends users upgrade to Digi Connect EZ or Digi Connect EZ TS as a long term solution. If users are not able to upgrade at this time, the following actions should be taken: Vendor fix For Digi PortServer TS: Enable HTTPS on the web server. Mitigation Alternatively, disable the web server when it is not actively being used for configuration. Mitigation Compensating control: If you cannot apply the HTTPS configuration, restrict access via firewall or VPN. Vendor fix For Digi One SP / Digi One SP IA / Digi One IA: Disable the web server. If you cannot apply the HTTPS configuration, restrict access via firewall or VPN. Mitigation The following deployment practices are the recommended means of reducing exposure: Deploy the device on a trusted network segment, not exposed to untrusted or public networks. Mitigation Place the device behind a firewall or VPN and restrict access to the web management interface to trusted administrative hosts only. Mitigation Safeguard administrator credentials, since exploitation requires authenticated administrator access to write the affected fields. Mitigation For assistance users should contact Digi International's support team https://www.digi.com/support. https://www.digi.com/support Relevant CWE: CWE-863 Incorrect Authorization Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N 4.0 8.2 HIGH CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2026-12948 A stored cross-site scripting (XSS) vulnerability in the web management interface of the Digi PortServer TS, Digi One SP, Digi One SP IA, and Digi One IA allows a remote, authenticated administrator to inject script into certain system configuration fields. The script subsequently executes in the browser of a user who views the affected pages. View CVE Details Affected Products Digi International PortServer TS, Digi One SP IA Vendor: Digi International Product Version: Digi International PortServer TS: <Firmware_2025, Digi International Digi One SP: <Firmware_2025, Digi International Digi One SP IA: <Firmware_2025, Digi International Digi One IA: <Firmware_2025 Product Status: known_affected Remediations Mitigation Digi International recommends users upgrade to Digi Connect EZ or Digi Connect EZ TS as a long term solution. If users are not able to upgrade at this time, the following actions should be taken: Vendor fix For Digi PortServer TS: Enable HTTPS on the web server. Mitigation Alternatively, disable the web server when it is not actively being used for configuration. Mitigation Compensating control: If you cannot apply the HTTPS configuration, restrict access via firewall or VPN. Vendor fix For Digi One SP / Digi One SP IA / Digi One IA: Disable the web server. If you cannot apply the HTTPS configuration, restrict access via firewall or VPN. Mitigation Digi International recommends users perform the following actions regarding XSS: Digi International will not provide a firmware fix for products affected by CVE-2026-12948, which are approaching end-of-life. Digi International recommends users upgrade to the Digi Connect EZ or Digi Connect EZ TS as a long-term solution. Mitigation The following deployment practices are the recommended means of reducing exposure: Deploy the device on a trusted network segment, not exposed to untrusted or public networks. Mitigation Place the device behind a firewall or VPN and restrict access to the web management interface to trusted administrative hosts only. Mitigation Safeguard administrator credentials, since exploitation requires authenticated administrator access to write the affected fields. Mitigation For assistance users should contact Digi International's support team https://www.digi.com/support. https://www.digi.com/support Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Metrics CVSS Version Base Score Base Severity Vector String 3.1 3.8 LOW CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N 4.0 4.8 MEDIUM CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N Acknowledgments nviCloud 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. 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 this vulnerability has been reported to CISA at this time. Revision History Initial Release Date: 2026-07-07 Date Revision Summary 2026-07-07 1 Initial Publication Legal Notice and Terms of Use

Impact

Digi International PortServer TS, Digi One SP, Digi One SP IA, Digi One IA (all versions prior to Firmware_2025)

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Digi International recommends upgrading to Digi Connect EZ or Digi Connect EZ TS. For immediate action, users should enable HTTPS on the web server for PortServer TS or disable the web server for Digi One SP, Digi One SP IA, and Digi One IA. If HTTPS cannot be enabled, restricting access via firewall or VPN is advised. Additionally, devices should be deployed on trusted network segments and administrator credentials should be safeguarded.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, XSS, and 1 more.

Read Original Article

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