ST Engineering iDirect iQ-Series Terminals

Summary

CISA disclosed two high-severity vulnerabilities in ST Engineering iDirect iQ-Series Terminals affecting Evolution iQ, 3315, and 9-Series models through version 4.5.2.1. CVE-2026-38059 exposes unauthenticated REST API endpoints allowing attackers to retrieve sensitive device credentials (Device ID, Terminal Private Key) used for satellite network authentication; CVE-2026-38057 permits cross-site request forgery attacks on the /api/reboot endpoint to trigger denial-of-service conditions. The vulnerabilities impact critical infrastructure sectors including communications, defense, energy, and transportation systems worldwide. Patches are available in version 4.5.2.2 and later.

Full text

ICS Advisory ST Engineering iDirect iQ-Series Terminals Release DateJuly 02, 2026 Alert CodeICSA-26-183-01 Related topics: Industrial Control System Vulnerabilities , Industrial Control Systems View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to device information or cause a denial-of-service condition. The following versions of ST Engineering iDirect iQ-Series Terminals are affected: Evolution iQ‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) 3315‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) 9‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) CVSS Vendor Equipment Vulnerabilities v3 8.1 ST Engineering iDirect ST Engineering iDirect iQ-Series Terminals Missing Authentication for Critical Function, Cross-Site Request Forgery (CSRF) Background Critical Infrastructure Sectors: Communications, Defense Industrial Base, Energy, Government Services and Facilities, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-38059 The iDirect iQ200 exposes the /api/identity and /api/ REST API endpoints without authentication. An unauthenticated attacker with network access can retrieve sensitive device information including the serial number, Device ID (DID), Terminal Private Key identifier (TPK), MAC address, and exact firmware version. The DID and TPK are used for satellite network authentication in the iDirect platform, potentially enabling terminal impersonation and network reconnaissance. View CVE Details Affected Products ST Engineering iDirect iQ-Series Terminals Vendor:ST Engineering iDirect Product Version:ST Engineering iDirect Evolution iQ‑Series terminals: <=4.5.2.1, ST Engineering iDirect 3315‑Series terminals: <=4.5.2.1, ST Engineering iDirect 9‑Series terminals: <=4.5.2.1 Product Status:known_affected Remediations MitigationST Engineering iDirect has fixed the vulnerabilities and recommend users update the software to version 4.5.2.2 or newer. MitigationRegistered users are able to download patches from the iDirect Support Portal https://support.idirect.net/s/login.https://support.idirect.net/s/login MitigationRestrict management interfaces to trusted networks (e.g., VPN, ACLs). MitigationAvoid exposing administrative APIs to the public internet. MitigationEnforce strong authentication practices. MitigationMonitor for anomalous API activity and unexpected device reboots. Relevant CWE: CWE-306 Missing Authentication for Critical Function Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2026-38057 The iDirect iQ200 does not validate CSRF tokens on state-changing API endpoints after authentication. The /api/reboot endpoint accepts POST requests authenticated solely by a session cookie that lacks the SameSite attribute. A remote attacker can host a malicious web page that, when visited by an authenticated administrator, automatically submits a cross-site POST request causing an immediate device reboot and satellite link loss. Repeated attacks can sustain a denial-of-service condition. View CVE Details Affected Products ST Engineering iDirect iQ-Series Terminals Vendor:ST Engineering iDirect Product Version:ST Engineering iDirect Evolution iQ‑Series terminals: <=4.5.2.1, ST Engineering iDirect 3315‑Series terminals: <=4.5.2.1, ST Engineering iDirect 9‑Series terminals: <=4.5.2.1 Product Status:known_affected Remediations MitigationST Engineering iDirect has fixed the vulnerabilities and recommend users update the software to version 4.5.2.2 or newer. MitigationRegistered users are able to download patches from the iDirect Support Portal https://support.idirect.net/s/login.https://support.idirect.net/s/login MitigationRestrict management interfaces to trusted networks (e.g., VPN, ACLs). MitigationAvoid exposing administrative APIs to the public internet. MitigationEnforce strong authentication practices. MitigationMonitor for anomalous API activity and unexpected device reboots. Relevant CWE: CWE-352 Cross-Site Request Forgery (CSRF) Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.1 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H 4.0 7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N Acknowledgments Ahmed Alqahtani of Aramco 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. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. Revision History Initial Release Date: 2026-07-02 Date Revision Summary 2026-07-02 1 Initial Publication Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Tags Sector: Communications Sector, Defense Industrial Base Sector, Energy Sector, Government Services and Facilities Sector, Transportation Systems Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback. Related Advisories Jul 02, 2026 ICS Advisory | ICSA-26-183-03 Gardyn IoT Hub Jul 02, 2026 ICS Advisory | ICSA-26-183-02 CubeSpace CW0057 Reaction Wheel Jun 30, 2026 ICS Advisory | ICSA-26-181-01 Mitsubishi Electric MELSOFT Update Manager SW1DND-UDM-M Jun 30, 2026 ICS Advisory | ICSA-26-181-04 Schneider Electric EasyLogic T150 and Saitel DP RTU

Indicators of Compromise

• cve — CVE-2026-38059
• cve — CVE-2026-38057

Entities