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CVE-2025-55093
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.
This record: live connection— last retrieved: 7 November 2026 at 01:34.
Vendor
Published
17 October 2025
Last modified
9 October 2026
Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
NETWORK
Privileges required
NONE
User interaction
NONE
Confidentiality
None
Integrity
Limited
Availability
None
Probability of exploitation within 30 days
0.3%
Percentile
24e
Source: FIRST.org, updated on 6 November 2026.
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.
Our own interpretation and context for the source data above.
IACS Radar assessment
Our own interpretation and context for this vulnerability — not an official source.
IACS Radar priority score
Based on CVSS 5.3, EPSS 0.3%, industrial relevance 40/100.
Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.
Conditions for exploitation
Operational impact & energy relevance
Limited impact on availability; the risk lies mainly with confidentiality or integrity of process data.
No strong energy-sector-specific signals recognised; general OT/ICS relevance.
Recommended defensive measures
Industrial relevance score
Classification is provisional; manual verification by an OT security analyst is recommended.
Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.
IEC 62443 mapping
Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.