CVE-2026-102551
High
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.
SeverityHigh
CVSS7.7
Exploit probability—
ProductFreeRTOS-Plus-TCP
PublishedOct 16, 2026
First seenOct 16, 2026
Weakness typeCWE-940CWE-940
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| FreeRTOS FreeRTOS-Plus-TCP | v ≤ 4.4.1 | — |
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