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TI-2025-10646 Aliases CVE-2025-11616

Buffer Over-read when receiving improperly sized ICMPv6 packets in FreeRTOS-Plus-TCP

Priority LOW 24CWE-126Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of certain message types which are smaller than the expected size. These issues only affect applications using IPv6. Users should upgrade 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 0.00313 24th 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

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-11616

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