CVE-2017-9607

CVE-2017-9607 describes an integer overflow vulnerability in the BL1 FWU SMC handling code of ARM Trusted Firmware versions prior to 1.4. This flaw allows an attacker to write arbitrary data to secure memory, bypass security checks, and potentially cause a denial of service or other unspecified impacts by providing a crafted AArch32 image. With a CVSS score of 7.0 (High), exploitation requires local access and user interaction, but can lead to high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.