CVE-2016-20059

IObit Malware Fighter 4.3.1 Unquoted Service Path Privilege Escalation

CVSS 8.5 HIGHEPSS 0.2%CWE-428

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 8.5EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

04 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Iobit · IObit Malware Fighter

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/40525unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

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