How severe is CVE-2025-55084?

CVE-2025-55084 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-55084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55084?

CVE-2025-55084 affects Eclipse Threadx Netx Duo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55084?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-55084 have an EU (EUVD) identifier?

Yes. CVE-2025-55084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34716.

When was CVE-2025-55084 published?

CVE-2025-55084 was published on 2025-10-16 and last updated on 2026-06-17.

CVE-2025-55084

CVE-2025-55084 is a medium-severity vulnerability in Eclipse Threadx Netx Duo with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-126.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.9
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34716
Weakness: CWE-126
Affected product: Eclipse Threadx Netx Duo
Published: 2025-10-16
Last modified: 2026-06-17

Description

In NetX Duo version before 6.4.4, the component of Eclipse Foundation ThreadX, there was an incorrect bound check in_nx_secure_tls_proc_clienthello_supported_versions_extension() in the extension version field.

Frequently asked questions

What is CVE-2025-55084?: In NetX Duo version before 6.4.4, the component of Eclipse Foundation ThreadX, there was an incorrect bound check in_nx_secure_tls_proc_clienthello_supported_versions_extension() in the extension version field.
How severe is CVE-2025-55084?: CVE-2025-55084 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-55084 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55084?: CVE-2025-55084 affects Eclipse Threadx Netx Duo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55084?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55084 have an EU (EUVD) identifier?: Yes. CVE-2025-55084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34716.
When was CVE-2025-55084 published?: CVE-2025-55084 was published on 2025-10-16 and last updated on 2026-06-17.

References

https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-m474-39rw-v8gm

Affected products (1)

cpe:2.3:a:eclipse:threadx_netx_duo:*:*:*:*:*:*:*:*

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