What’s Vulnerable › Vulnerabilities

CVE-2016-20059: IObit Malware Fighter 4.3.1 Unquoted Service Path Privilege Escalation

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-04 · updated 2026-07-21
• Weakness: CWE-428

Description

IObit Malware Fighter 4.3.1 contains an unquoted service path vulnerability in the IMFservice and LiveUpdateSvc services that allows local attackers to escalate privileges. Attackers can insert a malicious executable file in the unquoted service path and trigger privilege escalation when the service restarts or the system reboots, executing code with LocalSystem privileges.

Affected products

• IObit Malware Fighter: through 4.3.1

References

• http://www.iobit.com/downloadcenter.php?product=malware-fighter-free
• http://www.iobit.com/en/index.php
• https://www.exploit-db.com/exploits/40525
• https://www.vulncheck.com/advisories/iobit-malware-fighter-unquoted-service-path-privilege-escalation

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