Microsoft warns of critical flaw in Canon printer drivers
April 01, 2025 
Microsoft’s offensive security team discovered a critical code execution vulnerability impacting Canon printer drivers.
Researchers at Microsoft’s Offensive Research and Security Engineering (MORSE) team have discovered a critical code execution vulnerability, tracked as CVE-2025-1268 (CVSS score of 9.4), impacting Canon printer drivers.
The vulnerability is an out-of-bounds issue that resides in certain printer drivers for production printers, office/small office multifunction printers and laser printers. The flaw impacts the EMF recode processing of Generic Plus PCL6, UFR II, LIPS4, LIPSXL, and PS printer drivers. An attacker can exploit the flaw to prevent printing and/or potentially execute arbitrary code under certain conditions.
“Out-of-bounds vulnerability was found in certain printer drivers for production printers, office/small office multifunction printers and laser printers that may prevent printing and/or potentially be able to execute arbitrary code when the print is processed by a malicious application.” reads the advisory.
Canon will upload fixed printer drivers on local sales websites and advises customers to install the latest versions.
Canon also addressed other vulnerabilities that could allow remote code execution or DoS attacks against its printers.
“Canon U.S.A., Inc. has recently become aware of potential multiple buffer overflow vulnerabilities in the Canon Laser Printers and Small Office Multifunctional Printers listed under “Affected Models” below.” reads the advisory. “If the product is connected directly to the Internet without using a wired or Wi-Fi router, a third party could potentially execute arbitrary code or the product could be subjected to a Denial-of-Service (DoS) attack.”
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