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 ↗

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

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

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