{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-54410/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-14T17:10:12.275Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-54410","@id":"https://www.cve.org/CVERecord?id=CVE-2026-54410","description":"nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header() function of the Modbus/TCP server that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of the 260-byte receive buffer by sending a crafted MBAP frame whose Length field is set to 255. The overflow corrupts the adjacent buffer-index field of the nanoMODBUS state structure, resulting in denial of service through invalid memory accesses and, on bare-metal and RTOS ta"},"products":[{"@id":"cpe:2.3:a:debevv:nanomodbus:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:debevv:nanomodbus:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-14T17:10:12.275Z"}]}