CVE-2025-64503

CVE-2025-64503 describes an out-of-bounds write vulnerability in cups-filters versions prior to 1.28.18, and potentially libcupsfilters, affecting the CUPS printing service. An attacker can craft a malicious PDF file with a large MediaBox value, causing an integer overflow during line buffer allocation in the pdftoraster tool, leading to an attempted write beyond the buffer's boundaries. The vulnerability has a CVSS score of 3.3 (Low), indicating a local attack vector with user interaction required, resulting in a potential loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.