Integer overflow in Eclipse Threadx Netx Duo
CVE-2025-2259
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
EPSS: 0.009 (55.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Eclipse Threadx_netx_duo
- Eclipse Foundation Threadx — versions 0
Weakness classification (CWE)
References
- emo@eclipse.org (Patch, patch)
- emo@eclipse.org (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-2259?
- CVE-2025-2259 is a high-severity vulnerability in Eclipse Threadx Netx Duo, classified under Integer Underflow. CVSS score: 7.5/10. Published 2025-04-06.
- How severe is CVE-2025-2259?
- High severity. CVSS v3 base score is 7.5 out of 10.