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Advisory: AWS FreeRTOS-Plus-TCP — aws.amazon.com/security/security-bulletins/2026-021-aws Clear all filters
TI-2026-06526 CVE-2026-7423

Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP

Priority LOW 26

Integer underflow in the ICMP and ICMPv6 echo reply handlers in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network user to cause a denial of service (device crash) when outgoing ping support is enabled…

CVSS 4.0MEDIUM 6.0 Adjacent network No auth No interaction EPSS 0.00221 Published 2026-04-29 Fixed in 4.2.6, 4.4.1 CWE-191
TI-2026-06525 CVE-2026-7422

MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing

Priority LOW 30

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of…

CVSS 4.0HIGH 7.1 Adjacent network No auth No interaction EPSS 0.00177 Published 2026-04-29 Fixed in 4.2.6, 4.4.1 CWE-290