MICROSENS NMP Web+

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1. EXECUTIVE SUMMARY CVSS v4 9.3 ATTENTION: Exploitable remotely/Low attack complexity Vendor: MICROSENS Equipment: NMP Web+ Vulnerabilities: Use of Hard-coded, Security-relevant Constants, Insufficient Session Expiration, Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’)
2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to gain system access, overwrite files or execute arbitrary code.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of NMP Web+ are affected: NMP Web+: Version 3.2.5 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 USE OF HARD-CODED, SECURITY-RELEVANT CONSTANTS CWE-547 The affected products could allow an unauthenticated attacker to generate forged JSON Web Tokens (JWT) to bypass authentication. CVE-2025-49151 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N). A CVSS v4 score has also been calculated for CVE-2025-49151. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N). 3.2.2 INSUFFICIENT SESSION EXPIRATION CWE-613 The affected products contain JSON Web Tokens (JWT) that do not expire, which could allow an attacker to gain access to the system. CVE-2025-49152 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). A CVSS v4 score has also been calculated for CVE-2025-49152. A base score of 8.7 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N). 3.2.3 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22 The affected products could allow an unauthenticated attacker to overwrite files and execute arbitrary code. CVE-2025-49153 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). A CVSS v4 score has also been calculated for CVE-2025-49153. A base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Tomer Goldschmidt and Noam Moshe of Claroty Team82 reported these vulnerabilities to CISA. The German Federal Office for Information Security (BSI) CERT-Bund assisted coordination with MICROSENS.
4. MITIGATIONS MICROSENS recommends users to update to NMP Web+ Version 3.3.0 for Windows and Linux. CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as: 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. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY June 24, 2025: Initial Publication