Read the docs
TI-2026-74361 Aliases CVE-2026-106465

NetX Secure DTLS server skips cookie checks, enabling amplification

Priority LOW 37CWE-290Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-290.

Summary

Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603 are affected. The NetX Secure DTLS server never compares the cookie a client returns with the one it issued, so it accepts any non-empty cookie (CWE-406). A remote attacker with no privileges can make the server send its full handshake flight, several kilobytes, to a forged source address, reflecting amplified traffic at a third party.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603, the NetX Secure DTLS server never compares the cookie a client returns with the one it issued, and treats any non-empty cookie as verified. A remote attacker can make the server send its full handshake flight, several kilobytes, to a forged source address, using it to reflect amplified traffic at a third party.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00374 31st percentileScored 2026-11-07
Fix Fixed Eclipse ThreadX NetX Duo (Eclipse Foundation): 6.5.2.202603a

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse FoundationEclipse ThreadX NetX Duo6.0 – 6.5.2.2026036.5.2.202603aPatch availableCNA
  • Eclipse ThreadX NetX Duo VendorEclipse Foundation Affected 6.0 – 6.5.2.202603 Fixed in 6.5.2.202603a Patch available CNA

Remediation

Upgrade Eclipse ThreadX NetX Duo to 6.5.2.202603a, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA Eclipse ThreadX NetX Duo (Eclipse Foundation) Fixed in 6.5.2.202603a

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-106465
  2. 2026-10-16 Priority changed: MEDIUM → LOW
  3. 2026-10-18 CISA SSVC decision points changed
  4. 2026-10-18 Priority changed: LOW → MEDIUM
  5. 2026-11-04 Title updated · CNA
  6. 2026-11-04 CVSS score changed · CNA
  7. 2026-11-04 Fix available: Eclipse Foundation/Eclipse ThreadX NetX [email protected] · CNA
  8. 2026-11-04 Priority changed: MEDIUM → LOW

References

Other 2

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2026-81947 Unauthenticated command injection in Eclipse Che che-machine-exec CVSS 3.1CRITICAL 9.8
  • TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
  • TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
  • TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
  • TI-2026-74697 Authentication bypass in Eclipse Jetty EthereumAuthenticator CVSS 4.0CRITICAL 9.3
See all 466 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences