CVE-2025-55093
mediumpriority · track · 21EPSS 0.003 · 24 %ileDEEUUSEPSS · scored 2026-10-27
In NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ipv4_packet_receive() when handling unicast DHCP messages that could cause corruption of 4 bytes of memory.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No vendor fix yet; a mitigation is available.
- MitigationSICK microScan3 EtherCAT all Firmware versionssick_psirt
Ensure that an IP address is configured or assigned via DHCP and that the network is properly secured against unauthorized access so that only trusted entities have access to the devices. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources ”SICK Operating Guidelines” and ”ICS-CERT recommended practices on Industrial Security” could help to implement the general security practices.
- MitigationSICK microScan3 Pro I/O all Firmware versionssick_psirt
Ensure that an IP address is configured or assigned via DHCP and that the network is properly secured against unauthorized access so that only trusted entities have access to the devices. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources ”SICK Operating Guidelines” and ”ICS-CERT recommended practices on Industrial Security” could help to implement the general security practices.
- MitigationSICK nanoScan3 Core I/O all Firmware versionssick_psirt
Ensure that an IP address is configured or assigned via DHCP and that the network is properly secured against unauthorized access so that only trusted entities have access to the devices. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources ”SICK Operating Guidelines” and ”ICS-CERT recommended practices on Industrial Security” could help to implement the general security practices.
- MitigationSICK nanoScan3 Pro I/O all Firmware versionssick_psirt
Ensure that an IP address is configured or assigned via DHCP and that the network is properly secured against unauthorized access so that only trusted entities have access to the devices. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources ”SICK Operating Guidelines” and ”ICS-CERT recommended practices on Industrial Security” could help to implement the general security practices.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.7–6.9
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- SCA-2026-0003Vulnerability affecting SICK nanoScan3 and microScan32026-01-26csaf · sick_psirtDE
SICK has identified a 3rd party vulnerability (CVE-2025-55093) in the nanoScan3 and microScan3. Only specific variants within the microScan3 and nanoScan3 families are affected by CVE-2025-55093. The underlying issue in the NetX Duo networking module could, under specific conditions, cause the device to enter a safe error state that requires a restart. SICK recommends applying the mitigation for CVE-2025-55093.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-55093cnnvd
- https://github.com/eclipse-threadx/netxduo/releasesPatchcnnvd
- https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-c9pq-93jp-w649cnnvd
- https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-c9pq-93jp-w649enisa_euvd
- https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-c9pq-93jp-w649Vendor Advisorynvd
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