CVE-2023-0853

CVE-2023-0853 describes a critical buffer overflow vulnerability in the mDNS NSEC record processing of specific Canon Office/Small Office Multifunction Printers and Laser Printers, including various Satera, Color imageCLASS, and i-SENSYS models with firmware version 11.04 and earlier. This flaw allows an unauthenticated attacker on the same network segment to trigger a denial of service or execute arbitrary code on affected devices. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.