Vulnerability DatabaseCVE-2026-102551
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CVE-2026-102551
Published:October 16, 2026
Updated:October 20, 2026
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.
Affected Packages
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP.git (GITHUB):
Affected version(s) >=V4.4.0 <V4.4.2
Fix Suggestion:
Update to version V4.4.2
Related Resources (5)
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv
https://nvd.nist.gov/vuln/detail/CVE-2026-102551
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102551.json
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2
https://aws.amazon.com/security/security-bulletins/2026-139-aws/
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Verification of Source of a Communication Channel
CWE-940
EPSS
Base Score:
0.27