NetX Duo HTTP int underflow DOS before v6.4.3
CVE-2025-2258 Published on April 6, 2025
Eclipse ThreadX NetX Duo HTTP server single PUT request integer underflow
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.
Vulnerability Analysis
CVE-2025-2258 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is an Integer underflow Vulnerability?
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This can happen in signed and unsigned cases.
CVE-2025-2258 has been classified to as an Integer underflow vulnerability or weakness.
Products Associated with CVE-2025-2258
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Affected Versions
Eclipse Foundation ThreadX:- Before 6.4.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.