```json { "document": { "acknowledgments": [ { "name": [ "Maximilian Hildebrand" ], "organization": "G DATA Advanced Analytics", "summary": "Reported this vulnerability to CISA" } ], "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": [ { "text": "Disclosure is not limited", "tlp": { "label": "WHITE", "url": "https://www.cisa.gov/news-events/news/traffic-light-protocol-tip-defintions-and-usage" } } ], "lang": "en-US", "notes": [ { "category": "legal_disclaimer", "text": "This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy Policy (https://www.cisa.gov/privacy-policy). By using this product, you agree to the terms of these documents.", "title": "Legal Notice and Terms of Use" }, { "category": "summary", "text": "Successful exploitation of this vulnerability could allow an attacker to take control of the victim's browser.", "title": "Advisory Summary" }, { "category": "other", "text": "Commercial Facilities, Communications, Financial Services, Food and Agriculture, Government Services and Federal Infrastructure, Healthcare and Public Health, Critical Manufacturing, Nuclear Reactors, Materials, and Waste, Transportation Systems, Energy, Information Technology, Water and Wastewater Systems", "title": "Critical Infrastructure Sectors" }, { "category": "other", "text": "Austria, China, France, Germany, United Arab Emirates", "title": "Countries/Areas Deployed" }, { "category": "other", "text": "Germany", "title": "Company headquarters location" }, { "category": "general", "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.", "title": "Recommended Practices" }, { "category": "general", "text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.", "title": "Recommended Practices" }, { "category": "general", "text": "Locate control system networks and remote devices behind firewalls and isolating them from business networks.", "title": "Recommended Practices" }, { "category": "general", "text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs are not a complete solution.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage at cisa.gov/ics.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS.", "title": "Recommended Practices" }, { "category": "general", "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics.", "title": "Recommended Practices" }, { "category": "general", "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA.", "title": "Recommended Practices" }, { "category": "general", "text": "CISA also recommends users take the following measures to protect themselves from social engineering attacks.", "title": "Recommended Practices" }, { "category": "general", "text": "Do not click web links or open attachments in unsolicited email messages.", "title": "Recommended Practices" }, { "category": "general", "text": "Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.", "title": "Recommended Practices" }, { "category": "general", "text": "Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.", "title": "Recommended Practices" }, { "category": "general", "text": "No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.", "title": "Recommended Practices" } ], "publisher": { "category": "coordinator", "contact_details": "central@cisa.dhs.gov", "name": "CISA", "namespace": "https://www.cisa.gov" }, "references": [ { "category": "self", "summary": "ICS Advisory ICSA-26-139-05 JSON", "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-139-05.json" }, { "category": "self", "summary": "ICS Advisory ICSA-26-139-05 - Web Version", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-05" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices" }, { "category": "external", "summary": "Recommended Practices", "url": "https://www.cisa.gov/sites/d