| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE ID | N/A |
| CWE ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
CCleaner Client/Desktop applications / Antivirus software/Personal firewalls |
| Vendor | Piriform Ltd. |
This security advisory describes one critical risk vulnerability.
Risk: Critical
CVSSv3: 9.2 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]
CVE-ID: N/A
CWE-ID:
CWE-20 - Improper Input Validation
Exploit availability: No
DescriptionCCleaner version 5.33.6162 and CCleaner Cloud version 1.07.3191 were shipped with a backdoor code from official vendor’s website. The incident was detected on September 12.
The malicious version was released on August 15. Users, who downloaded CCleaner between August 15 and September 12, are affected.
Update to version 5.33.6163.
CCleaner: 5.33.6162
CPE External linkshttps://blog.avast.com/update-to-the-ccleaner-5.33.6162-security-incident
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.