What’s Vulnerable › Vulnerabilities

CVE-2026-94018: NetX Duo Web HTTP server releases an uninitialized packet pointer on the PUT Content-Length underflow path

• Severity: high (CVSS 8.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-20
• Weakness: CWE-457

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.

Affected products

• Eclipse Foundation NetX Duo: from 6.4.2 through 6.5.1.202602

References

• https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-wjxf-gjm5-jh5q

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