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CVE-2025-55100· NVD / CVE Program· CNA eclipse

Potential out-of-bounds read in _ux_host_class_audio10_sam_parse_func()

Noroxi assessment

Priority: Monitor (action score 9/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.56% (FIRST EPSS).
  • Physical access to the device is required. No account or password is required. No special conditions are required; it is repeatable.
  • Fixed version: Eclipse Foundation USBX 6.4.3.

Low priority for now. Upgrade to Eclipse Foundation USBX 6.4.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 2.4 · v4.0—No exploit Fix available
Published
Oct 17, 2025
Updated
Oct 9, 2026
EPSS
0.5% · 46th percentile

Report tools

JSON

Action score

9

Monitor

Low priority for now.

CVSS
9 / 40 · 2.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · eclipse
2.4
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-55100

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
eclipsethreadx usbx

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • eclipse threadx usbxbefore 6.4.3.202503

Versions reported by the vendor

Affected version ranges reported by the assigning authority (eclipse). Independent of NVD's CPE analysis and usually ahead of it.

  • Eclipse Foundation USBX

    • before 6.4.3affected · semver

Same product

eclipse: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-36063USBX Host CDC ECM integer underflow with buffer overflow
    40Plan
  • CVE-2022-29246Potential buffer overflow in function DFU upload in Azure RTOS USBX
    40Plan
  • CVE-2023-48698Azure RTOS USBX Remote Code Execution Vulnerability
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-55098Oct 17, 2025 · Potential out-of-bounds read in _ux_host_class_audio_device_type_get()
    4Monitor
  • ← EarlierCVE-2025-55099Oct 17, 2025 · Potential out-of-bounds read in _ux_host_class_audio_alternate_setting_locate()
    9Monitor
  • Later →CVE-2025-55095Jan 27, 2026 · The function _ux_host_class_storage_media_mount() is responsible for mounting partitions on a USB mass storage device.
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Eclipse Foundation USBX6.4.3Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-550970 days apartPotential out-of-bounds read in _ux_host_class_audio_streaming_sampling_get()
    9Monitor
  • CVE-2025-550990 days apartPotential out-of-bounds read in _ux_host_class_audio_alternate_setting_locate()
    9Monitor
  • CVE-2025-550980 days apartPotential out-of-bounds read in _ux_host_class_audio_device_type_get()
    4Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Physical access to the device is required.
  • No account or password is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Physical
Attack complexity
Low
Privileges required
None
User interaction
A
Scope
X

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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