TI-2026-84123 Aliases CVE-2026-115215

Session pool exhaustion in Eclipse ThreadX NetX Secure DTLS server

MEDIUM 44CWE-770Published 2026-11-02 · Updated 2026-11-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

Eclipse ThreadX versions 6.0 through 6.5.2.202603a are affected. The NetX Secure DTLS server allocates a session from its fixed pool for each new source before the cookie exchange and never reclaims sessions whose handshake stalls (CWE-770). A remote, unauthenticated attacker can exhaust the pool with spoofed datagrams and deny DTLS service to legitimate clients until the application resets the sessions.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00412 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Eclipse Foundation	Eclipse ThreadX	6.0 – 6.5.2.202603a	—	No fix listed	CNA

Eclipse ThreadX VendorEclipse Foundation Affected 6.0 – 6.5.2.202603a Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Eclipse ThreadX.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

2026-11-02 Threatist record created from CVE-2026-115215
2026-11-04 Priority changed: MEDIUM → LOW
2026-11-06 CISA SSVC decision points changed
2026-11-06 Priority changed: LOW → MEDIUM

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

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