CVE-2025-2258: threadx netx duo Integer Underflow — Fix

Description

In NetX Duo component 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 smaller than the data request size. A possible workaround is to disable HTTP PUT support. This issue follows an uncomplete fix in CVE-2025-0728.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
eclipse	threadx_netx_duo	< 6.4.3

References

Advisories & Patches

https://github.com/eclipse-threadx/netxduo/commit/6c8e9d1c95d71bd4b313e1cc37d8f8841543b248 https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-chqp-8vf8-cj25

Other References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-2105

Frequently Asked Questions

What is CVE-2025-2258? +

In NetX Duo component 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 smaller than the data request size. A possible workaround is to disable HTTP PUT support. This issue follows an uncomplete fix in CVE-2025-0728. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-2258? +

CVE-2025-2258 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-2258? +

CVE-2025-2258 affects products from eclipse, specifically: threadx_netx_duo. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-2258? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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