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  4. CVE 2026 114408 null pointer dereference in icmpv6 packet too big
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Back to active CVEs
High · CVSS 8.7CVE-2026-114408

NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is fullCVE-2026-114408

Answer in brief

CVE-2026-114408 records a High severity (CVSS 8.7) vulnerability in NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is full. The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/Eclipse ThreadX (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Eclipse Foundation/Eclipse ThreadX (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Eclipse Foundation/Eclipse ThreadXgeneric>=6.4.5 <=6.5.2.202603aNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Eclipse Foundation/Eclipse ThreadX.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencegitlab.eclipse.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Cortex-M module ports save a preempted user-mode module thread's registers through its unchecked stack pointer in privileged modeSame eclipse foundation/eclipse threadx package
  • User-mode module can suspend, terminate, re-prioritise and abort the waits of threads it does not ownSame eclipse foundation/eclipse threadx package
  • Module Manager loaders leave the manager mutex held when a module preamble's sizes overflow, blocking every later module operationSame eclipse foundation/eclipse threadx package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-252, CWE-476
Source
CVE List V5
Source checked
Nov 2, 2026
References
2 linked sources
Open source record