High 7.8Published Apr 4, 2026

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

Updated under an hour ago (Oct 25, 2026, 10:10 PM ET)

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It affects IObit Malware Fighter. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for IObit Malware Fighter

Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-428
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Apr 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Iobit IObit Malware Fighter iobit:malware_fighter (from the name)	4.3.1	CNA record
iobit malware_fighter iobit:malware_fighter	through 4.3.1	NVD

References

https://www.exploit-db.com/exploits/40525exploit, vdb-entry
http://www.iobit.com/en/index.phpproduct
http://www.iobit.com/downloadcenter.php?product=malware-fighter-freeproduct
https://www.vulncheck.com/advisories/iobit-malware-fighter-unquoted-service-path-privilege-escalationthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.