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    CVE-2025-11618

    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.

    Published:Oct 10, 2025
    Last Modified:Oct 31, 2025
    EPS:Oct 10, 2025
    EPSS Score:0.00035
    CVSS Score:4.3

    Affected Products

    Vendor
    Amazon
    Product
    Freertos-plus-tcp

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-7426 (CVSS 6.1) — Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TC…
    CVE-2026-7425 (CVSS 6) — Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2…
    CVE-2026-7424 (CVSS 7.2) — Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adja…
    CVE-2026-7423 (CVSS 6) — Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 all…
    CVE-2026-7422 (CVSS 7.1) — Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor …
    CVE-2025-11617 (CVSS 5.3) — A missing validation check in FreeRTOS-Plus-TCP's IPv6 packet processing code can lead to an out-of-bounds rea…
    CVE-2025-11616 (CVSS 5.3) — A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds r…
    CVE-2024-38373 (CVSS 9.6) — FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 c…

    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