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CVE-2025-55081

Eclipse Threadx Netx Duo out-of-bounds read

9.1 CRITICALEPSS 0.37%
  1. Published15 Oct 2025

Description

In Eclipse Foundation NextX Duo before 6.4.4, a module of ThreadX, the _nx_secure_tls_process_clienthello() function was missing length verification of certain SSL/TLS client hello message: the ciphersuite length and compression method length. In case of an attacker-crafted message with values outside of the expected range, it could cause an out-of-bound read.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-2025-55081 being actively exploited?

CVE-2025-55081 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.37%.

How severe is CVE-2025-55081?

CVE-2025-55081 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2025-55081?

Affected products include Eclipse Threadx Netx Duo.

How do I fix CVE-2025-55081?

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

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