CVE-2025-55085: Eclipse Foundation NetX Duo · Out-of-bounds Read
Affects Eclipse Foundation NetX DuoSource CVE Database V5
Not known to be exploited · CVSS 8.8 High : upgrade to 6.4.4 soon.
Data as of 26 Oct 2026, 08:30 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.4.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 17 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade eclipse-threadx/netxduo to 6.4.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubeclipse-threadx/netxduopkg:github/eclipse-threadx/netxduoOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
To mitigate CVE-2025-55085, European organizations should immediately verify their use of NetX Duo in embedded or IoT devices and prioritize upgrading to version 6.4.4 or later once available. In the absence of an official patch, implement strict input validation and sanitization at the application layer to detect and reject malformed HTTP headers. Network segmentation should be enforced to isolate vulnerable devices from untrusted networks, and network-level filtering or firewall rules should be configured to block suspicious HTTP traffic from unknown or untrusted servers. Employ intrusion detection systems capable of identifying anomalous HTTP responses indicative of exploitation attempts. Device manufacturers and integrators should review their firmware and software update mechanisms to ensure timely deployment of patches. Additionally, conduct thorough security testing and code audits of HTTP client implementations to identify and remediate similar parsing issues. Monitoring device logs and network traffic for unusual behavior can provide early detection of exploitation attempts. Finally, collaborate with vendors and the Eclipse Foundation for timely vulnerability disclosures and remediation guidance.
Description
In NextX Duo before 6.4.4, in the HTTP client module, the network support code for Eclipse Foundation ThreadX, the parsing of HTTP header fields was missing bounds verification. A crafted server response could cause undefined behavior.