--- title: "CVE-2026-114408: Eclipse ThreadX NetX Duo - Denial of Service" description: "Eclipse ThreadX NetX Duo 6.4.5.202504 through 6.5.2.202603a contains a denial of service caused by improper handling of ICMPv6 Packet Too Big messages in the destination table, letting network attackers crash the IP helper thread, exploit requires IPv6 path MTU discovery enabled." url: https://panop.io/threat-heartbeat/CVE-2026-114408/ --- # CVE-2026-114408 Eclipse ThreadX NetX Duo - Denial of Service Eclipse ThreadX NetX Duo 6.4.5.202504 through 6.5.2.202603a contains a denial of service caused by improper handling of ICMPv6 Packet Too Big messages in the destination table, letting network attackers crash the IP helper thread, exploit requires IPv6 path MTU discovery enabled. CVSS base score 8.7 /10 High CISA KEV Not listed Public exploit None known [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-114408) ## Details Type Denial of Service Impact Denial Of Service CVSS vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Published 2 November 2026 Updated 3 November 2026 Weakness [CWE-252](https://cwe.mitre.org/data/definitions/252.html) ## Vendor fix Update to a version later than 6.5.2.202603a or the latest available version. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-114408](https://nvd.nist.gov/vuln/detail/CVE-2026-114408) - [https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-xjgr-2wmf-f78j](https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-xjgr-2wmf-f78j) - [https://gitlab.eclipse.org/security/cve-assignment/-/work\_items/482](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/482) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)