{"cve":{"cve_id":"CVE-2026-7424","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00223,"epss_percentile":0.12673,"epss_as_of":"2026-06-23","description":"Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (permanent IP task freeze requiring hardware reset) by sending a single crafted DHCPv6 packet.\n\n\n\n\n\n\n\n\nThe issue is present whenever DHCPv6 is enabled.\n\n\n\n\n\n\n\n\nTo mitigate this issue, users should upgrade to version V4.2.6 or V4.4.1 or 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System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"aws","vendor_name":"AWS","product_slug":"freertos-plus-tcp","product_name":"FreeRTOS-Plus-TCP","version_start":"4.0.0","version_start_inclusive":true,"version_end":"4.2.6","version_end_inclusive":false,"cpe23_uri":"cve5:aws:freertos-plus-tcp:4.0.0:4.2.6"},{"vendor_slug":"aws","vendor_name":"AWS","product_slug":"freertos-plus-tcp","product_name":"FreeRTOS-Plus-TCP","version_start":"4.3.0","version_start_inclusive":true,"version_end":"4.4.1","version_end_inclusive":false,"cpe23_uri":"cve5:aws:freertos-plus-tcp:4.3.0:4.4.1"},{"vendor_slug":"aws","vendor_name":"AWS","product_slug":"freertos-plus-tcp","product_name":"FreeRTOS-Plus-TCP","version_start":"4.2.6","version_start_inclusive":true,"version_end":"4.2.6","version_end_inclusive":true,"cpe23_uri":"cve5:aws:freertos-plus-tcp:4.2.6:4.2.6"},{"vendor_slug":"aws","vendor_name":"AWS","product_slug":"freertos-plus-tcp","product_name":"FreeRTOS-Plus-TCP","version_start":"4.4.1","version_start_inclusive":true,"version_end":"4.4.1","version_end_inclusive":true,"cpe23_uri":"cve5:aws:freertos-plus-tcp:4.4.1:4.4.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.1","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.2.6","source_type":"PATCH","tags":["patch"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-022-aws/","source_type":"MISC","tags":[]},{"url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-wrhm-c99p-2p8g","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-04-29T18:51:28.385000Z","label":"CVE 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