How severe is CVE-2025-55100?

CVE-2025-55100 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2025-55100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55100?

CVE-2025-55100 affects Eclipse Threadx Usbx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-55100 have an EU (EUVD) identifier?

Yes. CVE-2025-55100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34864.

When was CVE-2025-55100 published?

CVE-2025-55100 was published on 2025-10-17 and last updated on 2026-06-17.

CVE-2025-55100

CVE-2025-55100 is a critical-severity vulnerability in Eclipse Threadx Usbx with a CVSS 3.x base score of 9.1. 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: Critical (CVSS 3.x base score 9.1)
CVSS v4: 2.4
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34864
Weakness: CWE-125
Affected product: Eclipse Threadx Usbx
Published: 2025-10-17
Last modified: 2026-06-17

Description

In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_audio10_sam_parse_func() when parsing a list of sampling frequencies.

Frequently asked questions

What is CVE-2025-55100?: In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_audio10_sam_parse_func() when parsing a list of sampling frequencies.
How severe is CVE-2025-55100?: CVE-2025-55100 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-55100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55100?: CVE-2025-55100 affects Eclipse Threadx Usbx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-55100 have an EU (EUVD) identifier?: Yes. CVE-2025-55100 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34864.
When was CVE-2025-55100 published?: CVE-2025-55100 was published on 2025-10-17 and last updated on 2026-06-17.

References

https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-j253-w29r-9m48

Affected products (1)

cpe:2.3:o:eclipse:threadx_usbx:*:*:*:*:*:*:*:*

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