medium6.5
CVE-2026-7425
Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to…
Impact
Insufficient option length validation in the IPv6 Router Advertisement parser in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause a denial of service (device crash) by sending a crafted Router Advertisement with a truncated PREFIX_INFORMATION option that is smaller than the expected structure size. To mitigate this issue, users should upgrade to the fixed version when available.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Amazon | Freertos-Plus-Tcp | from 4.0.0 before 4.2.6 from 4.3.0 before 4.4.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://aws.amazon.com/security/security-bulletins/2026-023-aws/
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-gffr-xgjg-jh9j