CVE-2025-40939 - "Siemens SIMATIC CN 4100 USB Reboot Denial of Service"

CVE-2025-40939 - "Siemens SIMATIC CN 4100 USB Reboot Denial of Service"

https://cvefeed.io/rssfeed/latest.atom / Tue, 12/09/2025 - 16:52
CVE ID : CVE-2025-40939
Published : Dec. 9, 2025, 12:29 p.m. | 2 hours, 6 minutes ago
Description : A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.
Severity: 4.6 | MEDIUM
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.