CVE-2025-2259

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.3, an attacker can cause an integer underflow and a subsequent denial of service by writing a very large file, by specially crafted packets with Content-Length in one packet smaller than the data request size of the other packet. A possible workaround is to disable HTTP PUT support.

This issue follows an incomplete fix of CVE-2025-0727

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Apr 6, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-2259: High severity, CVSS 7.5 | Vulnix