{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-5067/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-09T13:12:08.853Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-5067","@id":"https://www.cve.org/CVERecord?id=CVE-2026-5067","description":"A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and s"},"products":[{"@id":"cpe:2.3:a:zephyrproject-rtos:zephyr:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:zephyrproject-rtos:zephyr:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-09T13:12:08.853Z"}]}