Piriform / CCleaner

1 CVE

CVE ID	Description	Severity	CVSS	Published
CVE-2017-20201	CCleaner v5.33.6162 & CCleaner Cloud v1.07.3191 Malicious Backdoor Supply Chain Compromise	CRITICAL	9.3	Oct 8, 2025
CVE-2015-3999	Piriform CCleaner 3.26.0.1988 through 5.02.5101 writes the filenames to disk when overwriting files, which allows local users to obtain sensitive information b…	LOW	2.1	May 20, 2015

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