Medium severity · published Oct 16, 2025
CVE-2025-55091
Potential out of bound read in _nx_ip_packet_receive()
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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_ip_packet_receive() function when received an Ethernet with type set as IP but no IP data.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ND
NetX Duo · Eclipse Foundation
before 6.4.4 · source: vendor
TN
Threadx Netx Duo · Eclipse
before 6.4.4.202503 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55091
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55091
Vendor Advisory
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-pf5q-r6q5-6j2f
More from NetX Duo
9.3
CVE-2026-103415
When a TLS 1.3 client processes a HelloRetryRequest, it copies the server's cookie into its second ClientHello without checking that the cookie fits in the outgoing packet
9.3
CVE-2026-102761
NetX Duo's WebSocket client resets the unmasking cursor to the first `NX_PACKET` each time it advances through a chained packet, while the loop's upper bound belongs to the…
9.1
CVE-2025-55081
Potential out of bound read in _nx_secure_tls_process_clienthello()
8.8
CVE-2026-102713
The TFTP server accepts a DATA datagram of any size
8.8
CVE-2026-102712
On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the ciphersuite-list length against the total record length instead of the…