CVE-2025-55090Network attack vector

Unauthenticated memory disclosure via short IPv4 frames

Published Oct 16, 2025 · Updated Oct 16, 2025

Out-of-bounds read in Eclipse ThreadX NetX Duo before 6.4.4 allows remote attackers to disclose memory via a short IPv4 frame. _nx_ipv4_packet_receive reads the first four bytes through nx_ip_header_word_0 without confirming that the packet buffer contains them. An unauthenticated network sender must deliver an Ethernet frame carrying fewer than four bytes of IP data; the read exposes adjacent memory without a reported integrity impact.

CVSS severity6.9
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in Eclipse ThreadX NetX Duo before 6.4.4 allows remote attackers to disclose memory via a short IPv4 frame. _nx_ipv4_packet_receive reads the first four bytes through nx_ip_header_word_0 without confirming that the packet buffer contains them. An unauthenticated network sender must deliver an Ethernet frame carrying fewer than four bytes of IP data; the read exposes adjacent memory without a reported integrity impact.

The record

CVE
CVE-2025-55090
Published
Oct 16, 2025
Updated
Oct 16, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX NetX Duo
Classifications
CWE-125, CWE-126
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadX NetX Duoversion=0 <6.4.4

Published CVSS scores

6.9Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-126Buffer Over-read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo