CVE-2023-48696

Code execution via expired CDC ACM pointer

Published Dec 5, 2023 · Updated Aug 2, 2024

Expired-pointer dereference in Eclipse ThreadX USBX before 6.3.0 allows physically proximate attackers to execute code via USB CDC ACM. The flaw is in CDC ACM components of the USB host class, which dereference a pointer after its referenced object expires; the advisory does not identify the responsible function. Exploitation requires physical USB access, high-complexity conditions, and user interaction, with reported confidentiality and integrity impact.

CVSS severity6.7
Medium
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Expired-pointer dereference in Eclipse ThreadX USBX before 6.3.0 allows physically proximate attackers to execute code via USB CDC ACM. The flaw is in CDC ACM components of the USB host class, which dereference a pointer after its referenced object expires; the advisory does not identify the responsible function. Exploitation requires physical USB access, high-complexity conditions, and user interaction, with reported confidentiality and integrity impact.

The record

CVE
CVE-2023-48696
Published
Dec 5, 2023
Updated
Aug 2, 2024
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX USBX
Classifications
CWE-754, CWE-825, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.3.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadX USBXversion=< 6.3.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.7GitHub, Inc.CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
CWE-825Expired Pointer Dereference
T1200Hardware Additions

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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