How severe is CVE-2025-55091?

CVE-2025-55091 has a CVSS 3.x base score of 6.5, 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 low.

Is CVE-2025-55091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55091?

CVE-2025-55091 affects Eclipse Threadx Netx Duo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55091?

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

Does CVE-2025-55091 have an EU (EUVD) identifier?

Yes. CVE-2025-55091 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34735.

When was CVE-2025-55091 published?

CVE-2025-55091 was published on 2025-10-16 and last updated on 2026-06-17.

CVE-2025-55091

CVE-2025-55091 is a medium-severity vulnerability in Eclipse Threadx Netx Duo with a CVSS 3.x base score of 6.5. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34735
Weakness: CWE-125
Affected product: Eclipse Threadx Netx Duo
Published: 2025-10-16
Last modified: 2026-06-17

Description

In NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ip_packet_receive() function when received an Ethernet with type set as IP but no IP data.

Frequently asked questions

What is CVE-2025-55091?: In NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ip_packet_receive() function when received an Ethernet with type set as IP but no IP data.
How severe is CVE-2025-55091?: CVE-2025-55091 has a CVSS 3.x base score of 6.5, 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 low.
Is CVE-2025-55091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55091?: CVE-2025-55091 affects Eclipse Threadx Netx Duo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55091 have an EU (EUVD) identifier?: Yes. CVE-2025-55091 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34735.
When was CVE-2025-55091 published?: CVE-2025-55091 was published on 2025-10-16 and last updated on 2026-06-17.

References

https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-pf5q-r6q5-6j2f

Affected products (1)

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

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