CVE-2021-1223

CVE-2021-1223 describes a high-severity vulnerability in the Snort detection engine, affecting multiple Cisco products. This flaw, stemming from incorrect handling of HTTP range headers, allows an unauthenticated, remote attacker to bypass configured file policies for HTTP traffic. A successful exploit could enable the delivery of malicious payloads, with a CVSS score of 7.5 (High). Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.