CISA ICSA-25-345-03 Advisory: Critical ICS Vulnerabilities CVE-2025-66590/66589/66588/66585

Vulnerability Overview Vulnerability ID: CVE-2025-66590, CVE-2025-66589, CVE-2025-66588, CVE-2025-66585 Description: These vulnerabilities require an attacker to upload a malicious file to be successfully exploited. Severity: Critical manufacturing and critical infrastructure sectors. Impact Scope Global Deployment: These vulnerabilities are deployed globally. Affected Countries/Regions: United States. Company Headquarters Location: Company headquarters location. Remediation Recommended Actions: - Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible via the network. - Place control system networks and remote devices behind firewalls and isolate them from business networks. - When remote access is required, use more secure remote access methods, such as Virtual Private Networks (VPN). - Before deploying defensive measures, organizations should conduct appropriate impact analysis and risk assessments. - Implement recommended cybersecurity strategies to proactively defend ICS networks. - Organizations should follow established internal dispatch and reporting procedures to observe suspicious malicious activities. - Users should take the following measures to protect themselves from social engineering attacks: - Do not click on suspicious links or open attachments in email messages. - Refer to “Identifying and Avoiding Email Fraud” for more information. - Refer to “Avoiding Social Engineering and Phishing Attacks” for more information. References CISA Advisory: ICSA-25-345-03 JSON File: ICSA-25-345-03 JSON Additional Information Disclosure Restrictions: Disclosure is unrestricted. Language: English (United States) Notice: This product is subject to this notice, privacy policy, and terms and conditions. Summary These vulnerabilities require an attacker to upload a malicious file to be successfully exploited, affecting critical manufacturing and critical infrastructure sectors on a global scale. Recommended actions include minimizing network exposure, using secure remote access methods, conducting impact analysis and risk assessments, implementing cybersecurity strategies, following internal dispatch and reporting procedures, and adopting social engineering protection measures. For more details, please refer to the CISA Advisory and the JSON file.

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CISA ICSA-25-345-03 Advisory: Critical ICS Vulnerabilities CVE-2025-66590/66589/66588/66585

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