Horner Automation Cscape

Summary

A critical vulnerability, CVE-2026-12897, has been identified in Horner Automation Cscape software versions prior to 10.2 SP3. This out-of-bounds read vulnerability, triggered by parsing CSP files, allows a local attacker to disclose information and execute arbitrary code. Horner Automation has released version 10.2 SP3 as a fix.

Full text

ICS Advisory Horner Automation Cscape Release DateJune 25, 2026 Alert CodeICSA-26-176-03 Related topics: Industrial Control System Vulnerabilities , Industrial Control Systems View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker to disclose information and execute arbitrary code. The following versions of Horner Automation Cscape are affected: Cscape <10.2_SP3 CVSS Vendor Equipment Vulnerabilities v3 7.8 Horner Automation Horner Automation Cscape Out-of-bounds Read Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-12897 Horner Automation Cscape versions prior to 10.2 SP3 are vulnerable to an Out-of-Bounds Read vulnerability through parsing CSP files. Successful exploitation of this vulnerability could allow an attacker to disclose information and execute arbitrary code. View CVE Details Affected Products Horner Automation Cscape Vendor:Horner Automation Product Version:Horner Automation Cscape: <10.2_SP3 Product Status:known_affected Remediations Vendor fixHorner Automation has released Cscape 10.2 SP3 for users to download. Vendor fixFor more information, see the Cscape 10.2 SP3 release notes (https://hornerautomation.com/cscape-software-free/cscape-software/).https://hornerautomation.com/cscape-software-free/cscape-software/ Relevant CWE: CWE-125 Out-of-bounds Read Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 4.0 8.4 HIGH CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Acknowledgments Michael Heinzl reported this vulnerability 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 this vulnerability. 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 this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. Revision History Initial Release Date: 2026-06-25 Date Revision Summary 2026-06-25 1 Initial Publication Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Vendor Horner Automation Tags Sector: Critical Manufacturing 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 Jun 25, 2026 ICS Advisory | ICSMA-26-176-02 OHIF Viewers DICOM Jun 25, 2026 ICS Advisory | ICSA-26-176-02 EVoke Systems Charging Station Management System Jun 25, 2026 ICS Advisory | ICSA-26-176-04 Daktronics Controller Firmware Jun 25, 2026 ICS Advisory | ICSA-26-176-01 Yokogawa FAST/TOOLS and CI Server

Indicators of Compromise

• cve — CVE-2026-12897

Entities