CVE-2025-0728Network attack vector

Service interruption via HTTP PUT length underflow

Published Feb 21, 2025 · Updated Feb 21, 2025

Integer underflow in Eclipse ThreadX NetX Duo before 6.4.2 allows remote authenticated users to exhaust file-system space via HTTP PUT. _nx_web_http_server_put_process subtracts first-packet body bytes from an unsigned Content-Length without checking whether the body is larger, wrapping the remaining length to 0xffffffff. HTTP PUT support and file-writing access are required; the server then keeps receiving and writing data until storage exhaustion interrupts service.

CVSS severity5.3
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in Eclipse ThreadX NetX Duo before 6.4.2 allows remote authenticated users to exhaust file-system space via HTTP PUT. _nx_web_http_server_put_process subtracts first-packet body bytes from an unsigned Content-Length without checking whether the body is larger, wrapping the remaining length to 0xffffffff. HTTP PUT support and file-writing access are required; the server then keeps receiving and writing data until storage exhaustion interrupts service.

The record

CVE
CVE-2025-0728
Published
Feb 21, 2025
Updated
Feb 21, 2025
Vendor
The Eclipse Foundation
Product
Eclipse ThreadX
Classifications
CWE-191, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 21, 2025Record 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=0 <6.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Eclipse Foundation · Eclipse ThreadXversion=0 <6.4.1

Published CVSS scores

4.3Eclipse ThreadX NetX DuoCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.3Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

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

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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