Integer overflow in Eclipse Threadx Netx Duo

CVE-2025-0728

In NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.2, 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.

EPSS: 0.007 (50.5th 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

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-0728?
CVE-2025-0728 is a high-severity vulnerability in Eclipse Threadx Netx Duo, classified under Integer Underflow. CVSS score: 7.5/10. Published 2025-02-21.
How severe is CVE-2025-0728?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-0728 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.