TI-2026-69014 Aliases CVE-2026-103416

Out-of-bounds write in Eclipse NetX Duo TLS handshake cache

MEDIUM 47CWE-787Published 2026-10-07 · Updated 2026-10-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Eclipse ThreadX NetX Duo through 6.5.1.202602 is affected. An out-of-bounds write (CWE-787) happens in the TLS 1.3 handshake message cache when a handshake message is larger than the cache, so the write continues into the rest of the session control block, which holds pointers. A malicious or compromised server can trigger this in a TLS 1.3 client before certificate authentication completes, so no server certificate is needed.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Out-of-bounds write via the TLS 1.3 handshake message cache in NetX Duo in Eclipse ThreadX NetX Duo 6.5.1.202602 allows a handshake message larger than the cache writes past it and on into the rest of the session control block, which holds pointers. A malicious or compromised server can make a TLS 1.3 client produce such a message before certificate authentication completes, so no server certificate is needed to reach it.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00209 11th percentileScored 2026-11-07

Fix Fixed Eclipse ThreadX - NetX Duo (Eclipse Foundation): 6.5.2.202603

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Eclipse Foundation	Eclipse ThreadX - NetX Duo	up to 6.5.1.202602	6.5.2.202603	Patch available	CNA

Eclipse ThreadX - NetX Duo VendorEclipse Foundation Affected up to 6.5.1.202602 Fixed in 6.5.2.202603 Patch available CNA

Remediation

Upgrade Eclipse ThreadX NetX Duo to 6.5.2.202603, the fixed version listed for this product.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

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

Timeline

2026-10-07 Threatist record created from CVE-2026-103416
2026-10-07 CISA SSVC decision points changed

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