CVE-2026-114408

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    CVE-2026-114408

    Published: 2 Nov 2026Last Modified: 7 Nov 2026

    Summary: NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is full

    Details: In Eclipse ThreadX NetX Duo versions 6.4.5.202504 through 6.5.2.202603a, built with IPv6 path MTU discovery, the ICMPv6 Packet Too Big handler uses the destination-table entry it adds without checking that the add succeeded. A sender on the network can fill the destination table with Packet Too Big messages quoting new destinations, after which the next message makes the IP helper thread dereference a NULL pointer, crashing it on targets that fault on address 0 and stopping all network processing.

    References: https://gitlab.eclipse.org/security/cve-assignment/-/work_items/482, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114408.json, https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-xjgr-2wmf-f78j, https://nvd.nist.gov/vuln/detail/CVE-2026-114408

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b54bf0180199be4a9677d55113d6c5f5ed1879bc
    Fixed -None

    Affected versions

    v6.5.2.202603b_rel
    v6.5.2.202603a_rel
    v6.5.2.202603_rel
    v6.5.1.202602_rel
    v6.5.0.202601_rel

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-114408 | CVE-DB