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CVE-2025-55086

Eclipse Threadx Netx Duo out-of-bounds read

9.8 CRITICALEPSS 0.41%
  1. Published20 Oct 2025

Description

In NetXDuo version before 6.4.4, a networking support module for Eclipse Foundation ThreadX, in the DHCPV6 client there was an unchecked index extracting the server DUID from the server reply. With a crafted packet, an attacker could cause an out of memory read.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Eclipse Threadx Netx Duo< 6.4.4.202503

Remediation

Fixed in
Eclipse Threadx Netx Duo≥ 6.4.4.202503

References

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Frequently asked

Is CVE-2025-55086 being actively exploited?

CVE-2025-55086 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.41%.

How severe is CVE-2025-55086?

CVE-2025-55086 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.41% probability of exploitation.

Which products are affected by CVE-2025-55086?

Affected products include Eclipse Threadx Netx Duo.

How do I fix CVE-2025-55086?

Upgrade affected software to a fixed version, for example Eclipse Threadx Netx Duo 6.4.4.202503 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-55086 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.