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CVE-2023-48697

INDEX BUILT · 2026-09-20

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Azure RTOS USBX Remote Code Execution Vulnerability

CVE-2023-486974 of 4 sources documented this
27

rank 27 = 0 + 25 + 0 + 2 + 0

rank@v1 · scheduled

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.01185  ·  without this subject the record ranks 27

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 2

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 27

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 25

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 27

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$59,100over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$59,100 = $4.99M incident cost x 1 exposure x 0.01185 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.01185EPSSNOT IN KEVas of 2026-09-20
Severity6.4 MEDIUMreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2023-12-05, 923 days at 0.01, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Sources disagree here.

Severity score
GitHub_M6.4 MEDIUMreceipt
NVD9.8 CRITICALreceipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running azure-rtos usbx? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds physical access · no privileges required · no user interaction · high attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-476 NULL Pointer Dereference; CWE-825 Expired Pointer Dereference; CWE-787 Out-of-bounds Writereceipt
Published consequencesCWE-476: Availability: DoS: Crash, Exit, or Restart; Integrity, Confidentiality: Execute Unauthorized Code or Commands, Read Memory, Modify Memory[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchthreadx usbx 6.3.0receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA6.4 MEDIUMreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.01185 · top 34% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes26 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productazure-rtos usbxreceipt
Published rangeseclipse threadx usbx < 6.3.0receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Physical accessno credentials, no interactionazure-rtos usbxCWE-476 NULL pointer dereferenceFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-476data compromise

What it is stated by the CNA

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. An attacker can cause remote code execution due to memory buffer and pointer vulnerabilities in Azure RTOS USBX. The affected components include functions/processes in pictbridge and host class, related to PIMA, storage, CDC ACM, ECM, audio, hub in RTOS v6.2.1 and below. The fixes have been included in USBX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-476; CWE-787; CWE-825
affected versions
eclipse threadx usbx < 6.3.0
also scored by
[email protected] 6.4 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

The CNA scored it 6.4 and NVD 9.8. Both are shown because both were published; we do not pick one.

check it yourself github.com receipt

Movement the material steps

5 Dec 20230.00045
17 Mar 20250.0155 · scoring model v2025.03.14
15 Jun 20260.01185 · scoring model v2026.06.15

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 26 observations
5 Dec 20230.00045
9 Dec 20230.04355
6 Jan 20240.03280
13 Mar 20240.02914
8 Apr 20240.03225
9 May 20240.04035
17 May 20240.03096
11 Jun 20240.03320
18 Sep 20240.03958
30 Sep 20240.03945
11 Oct 20240.04828
24 Oct 20240.04506
4 Nov 20240.05072
11 Dec 20240.05859
17 Dec 20240.02088
6 Jan 20250.01851
17 Mar 20250.0155
29 Mar 20250.04164
30 Mar 20250.02427
15 Apr 20250.02258
25 Apr 20250.04009
8 Aug 20250.04357
28 Oct 20250.02853
18 Nov 20250.01007
21 Nov 20250.02853
15 Jun 20260.01185

26 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.01185Published2023-12-05Index as of2026-06-15

Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.01007 → 0.02853) and the record had been public for 2 years, 6 months when this index was last written.

Published 2023-12-05 receipt · Index as of 2026-06-15 derived

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