CVE-2017-20201

CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 32-bit builds contained a malicious pre-entry-point loader that diverts execution from scrtcommonmainseh into a custom loader. That loader decodes an embedded blob into shellcode, allocates executable heap memory, resolves Windows API functions at...

CVE-2017-20201 CCleaner v5.33.6162 & CCleaner Cloud v1.07.3191 Malicious Backdoor Supply Chain Compromise

CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 32-bit builds contained a malicious pre-entry-point loader that diverts execution from scrtcommonmainseh into a custom loader. That loader decodes an embedded blob into shellcode, allocates executable heap memory, resolves Windows API functions at...

CVE-2017-20201

CVE-2017-20201 affects CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 (32-bit). A malicious pre-entry-point loader diverts from __scrt_common_main_seh to a custom loader that decodes an embedded blob into shellcode, allocates executable memory, resolves Windows API calls at runtime, and transf...

PT-2025-41312

Name of the Vulnerable Software and Affected Versions CCleaner versions 5.33.6162 CCleaner Cloud versions 1.07.3191 Description CCleaner and CCleaner Cloud contained a malicious pre-entry-point loader that redirects execution to a custom loader. This loader decodes an embedded blob into shellcode...