CVE-2026-7425
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Apr 29, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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