CVE-2026-94018 Eclipse Foundation CVE debrief

Who should care

Defenders of NetX Duo Web HTTP server deployments, particularly those with unauthenticated remote access, should assess exposure and prioritize remediation. The vulnerability allows an unauthenticated remote client to cause a denial of service in NetX Duo Web HTTP server by releasing an uninitialized pointer. Defenders should verify vulnerability status and review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-94018 allows an unauthenticated remote client to cause a denial of service in NetX Duo Web HTTP server by releasing an uninitialized pointer. Defenders should assess exposure, prioritize remediation, and verify vulnerability status.

• Denial of service due to uninitialized pointer release
• Potential for remote code execution or data corruption
• Need for version verification and upgrade to patched version
• Limited information available on affected versions and remediation

Technical summary

The NetX Duo Web HTTP server dereferences and releases an uninitialized pointer when it detects a Content-Length underflow while processing a PUT request. This condition is reachable by an unauthenticated remote client with a single malformed request. The vulnerability affects NetX Duo Web HTTP server versions 6.4.2 and 6.5.1.202602. Defenders should consider upgrading to version 6.5.2.202603 to mitigate the vulnerability. The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and remediation.

Defensive priority

High

Recommended defensive actions

• Assess exposure of NetX Duo Web HTTP server to unauthenticated remote clients
• Prioritize remediation of affected versions 6.4.2 and 6.5.1.202602
• Verify vulnerability status and upgrade to version 6.5.2.202603 if necessary
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and remediation. Defenders should verify vulnerability status and review compensating controls for exposed systems while remediation is scheduled and verified. The vulnerability allows an unauthenticated remote client to cause a denial of service in NetX Duo Web HTTP server by releasing an uninitialized pointer.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.