Description
Insufficient validation of the prefix length field in IPv6 Router Advertisement processing in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to cause memory corruption by sending a crafted Router Advertisement with a prefix length value exceeding the maximum valid length, resulting in a heap buffer overflow. Users processing IPv4 RA only are not impacted. To mitigate this issue, users should upgrade to the fixed version when available.
Details
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| freertos-plus-tcp | 4.3.0 | 4.4.1 |
References
Similar Threats
- Medium CVE-2026-7422
- Medium CVE-2026-7423
- High CVE-2026-7424
- Medium CVE-2026-7425
- Medium CVE-2025-11616
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