Description

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 the device's own registered endpoints, because the loopback detection mechanism skips all input validation for packets whose source MAC matches a local endpoint. To mitigate this issue, users should upgrade to the fixed version when available.

INFO

Published Date :

2026-04-29T18:35:33.797Z

Last Modified :

2026-04-29T19:07:31.899Z

Source :

AMZN
AFFECTED PRODUCTS

The following products are affected by CVE-2026-7422 vulnerability.

Vendors Products
Amazon
  • Freertos-plus-tcp
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-7422.

URL Resource
https://aws.amazon.com/security/security-bulletins/2026-021-aws/ cve-icon cve-icon
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6 cve-icon cve-icon
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1 cve-icon cve-icon
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-jpw4-6h59-62w9 cve-icon cve-icon
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Detailed values of each vector for above chart.
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Integrity Impact
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