High severity · published Oct 20, 2026
CVE-2026-94018
NetX Duo Web HTTP server releases an uninitialized packet pointer on the PUT Content-Length underflow path
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
The Web add-on's HTTP server dereferences and releases an uninitialized pointer when it detects a `Content-Length` underflow while processing a `PUT` request. The condition is reachable by an unauthenticated remote client with a single malformed request.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ET
Eclipse ThreadX - NetX Duo · Eclipse Foundation
6.4.2 through 6.5.1.202602 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94018
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-94018
github.com
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-wjxf-gjm5-jh5q
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