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TI-2025-10648 Aliases CVE-2025-11618

Invalid Pointer Dereference when receiving UDP/IPv6 packets in FreeRTOS-Plus-TCP

Priority LOW 24CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

A missing validation check in FreeRTOS-Plus-TCP's UDP/IPv6 packet processing code can lead to an invalid pointer dereference when receiving a UDP/IPv6 packet with an incorrect IP version field in the packet header. This issue only affects applications using IPv6. We recommend upgrading to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00346 28th percentileScored 2026-11-07
Fix Fixed FreeRTOS-Plus-TCP (AWS): 4.3.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSFreeRTOS-Plus-TCP4.0.0 to before 4.3.44.3.4Patch availableCNA
  • FreeRTOS-Plus-TCP VendorAWS Affected 4.0.0 to before 4.3.4 Fixed in 4.3.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*4.0.0 to before 4.2.5; 4.3.0 to before 4.3.4VulnerableAWS
  • cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.2.5; 4.3.0 to before 4.3.4 Vulnerable ·AWS

Remediation

  • Fix · CNA FreeRTOS-Plus-TCP (AWS) Fixed in 4.3.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    AWS FreeRTOS-Plus-TCP — aws.amazon.com/security/security-bulletins/AWS-2025-023

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2025-10647 Buffer Over-read when receiving IPv6 packets with incorrect payload length in FreeRTOS-Plus-TCPPriority LOW 24
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-11618

References

Patch 1

Advisory 2

  • TI-2024-25630 FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser CVSS 3.1CRITICAL 9.6
  • TI-2026-06527 Integer Underflow in DHCPv6 Sub-Option Parser in FreeRTOS-Plus-TCP CVSS 4.0HIGH 7.2
  • TI-2026-06525 MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing CVSS 4.0HIGH 7.1
  • TI-2026-06529 Out-of-Bounds Write via Unsanitized Prefix Length in Router Advertisement Processing in FreeRTOS-Plus-TCP CVSS 4.0MEDIUM 6.1
  • TI-2026-06528 Out-of-Bounds Read in Router Advertisement Option Parser in FreeRTOS-Plus-TCP CVSS 4.0MEDIUM 6.0
  • TI-2026-06526 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP CVSS 4.0MEDIUM 6.0
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences