{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-7422 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-7422 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-7422 is a high-severity vulnerability in AWS FreeRTOS-Plus-TCP, published on 29 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-7422 and fix it if it is affected.\n\nWhat it is: CVE-2026-7422 is a high-severity vulnerability in AWS FreeRTOS-Plus-TCP, published on 29 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-7422 in the wild and no public exploit code.\n\nAffected product: AWS FreeRTOS-Plus-TCP. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-7422/ (Markdown: https://insights.sbomify.com/CVE-2026-7422/index.md)","id":"CVE-2026-7422","markdown":"https://insights.sbomify.com/CVE-2026-7422/index.md","name":"CVE-2026-7422","record":{"aliases":["GHSA-jpw4-6h59-62w9"],"analysis":{"component_type":"iot_embedded","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"FreeRTOS TCP stack","requires_auth":"none","summary":"An adjacent attacker can bypass packet validation checks by spoofing the source MAC address to match a local endpoint in FreeRTOS-Plus-TCP.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[{"product":"freertos-plus-tcp","vendor":"amazon"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"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.\n\nTo mitigate this issue, users should upgrade to the fixed version when available.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing","id":"CVE-2026-7422","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP","id":"CVE-2026-7423"},"packages":[],"prev":{"headline":"Passeum Ticketing \u003c= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'shop_name' Setting","id":"CVE-2026-7421"},"products":["FreeRTOS-Plus-TCP"],"published":"2026-04-29","related":[{"cvss_score":9.6,"headline":"FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser","id":"CVE-2024-38373","kev_date_added":null,"published":"2024-06-24"},{"cvss_score":7.2,"headline":"Integer Underflow in DHCPv6 Sub-Option Parser in FreeRTOS-Plus-TCP","id":"CVE-2026-7424","kev_date_added":null,"published":"2026-04-29"},{"cvss_score":6.1,"headline":"Out-of-Bounds Write via Unsanitized Prefix Length in Router Advertisement Processing in FreeRTOS-Plus-TCP","id":"CVE-2026-7426","kev_date_added":null,"published":"2026-04-29"},{"cvss_score":6,"headline":"Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP","id":"CVE-2026-7423","kev_date_added":null,"published":"2026-04-29"},{"cvss_score":6,"headline":"Out-of-Bounds Read in Router Advertisement Option Parser in FreeRTOS-Plus-TCP","id":"CVE-2026-7425","kev_date_added":null,"published":"2026-04-29"},{"cvss_score":5.3,"headline":"Buffer Over-read when receiving improperly sized ICMPv6 packets in FreeRTOS-Plus-TCP","id":"CVE-2025-11616","kev_date_added":null,"published":"2025-10-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-29","vendors":["AWS"]},"summary":"An adjacent attacker can bypass packet validation checks by spoofing the source MAC address to match a local endpoint in FreeRTOS-Plus-TCP.","url":"https://insights.sbomify.com/CVE-2026-7422/"}