Description
Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.



To remediate this issue, users should upgrade to version V4.4.2.
Published: 2026-10-16
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 19 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 16 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Description Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement. To remediate this issue, users should upgrade to version V4.4.2.
Title Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling
First Time appeared Freertos
Freertos freertos-plus-tcp
Weaknesses CWE-940
CPEs cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:*
Vendors & Products Freertos
Freertos freertos-plus-tcp
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}

Subscriptions

Freertos Freertos-plus-tcp
cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-10-19T12:51:13.488Z

Reserved: 2026-09-29T13:04:13.721Z

Link: CVE-2026-102551

cve-icon Vulnrichment

Updated: 2026-10-19T12:50:54.056Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-16T18:17:14.750

Modified: 2026-10-19T13:16:53.353

Link: CVE-2026-102551

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-16T18:30:14Z

Weaknesses
  • CWE-940

    Improper Verification of Source of a Communication Channel