CVE-2026-21009-ECDSA-Nonce-Reuse-in-IoT-Firmware-Signing

CVE-2026-21009 – IoTファームウェア署名におけるECDSAナンス再利用 プログラムコード Python root@kitploit: ecdsanoncereusesim.py - Signing firmware with repeated nonce k import ecdsa, hashlib sk = ecdsa.SigningKey.generatecurve=ecdsa.NIST256p vk = sk.getverifyingkey Sign two different firmware images with same nonce due to bad...