In several security advisories released during January, Lexmark recommends firmware updates to fix the issues identified.
Vulnerabilities that have been identified in various Lexmark devices are a buffer overflow vulnerability has been identified in PostScript interpreter, its CVE identification is CVE-2023-50734, a heap corruption vulnerability has been identified in PostScript interpreter, CVE-2023-50735, a memory corruption vulnerability has been identified in PostScript interpreter, CVE-2023-50736 and a vulnerability in one of the SE menu routines can be leveraged by an attacker to execute arbitrary code, CVE-2023-50737.
More than 150 devices were identified and can be found here.
Lexmark recommends a firmware update if your device has affected firmware.