Unquoted Service Path Vulnerability in IObit Malware Fighter by IObit
CVE-2016-20059

8.5HIGH

Key Information:

Vendor

Iobit

Status
Iobit Malware Fighter
Vendor
CVE Published:
4 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2016-20059?

IObit Malware Fighter 4.3.1 is affected by an unquoted service path vulnerability in its IMFservice and LiveUpdateSvc services. This flaw allows local attackers to execute malicious code with elevated privileges. By inserting a harmful executable into the unquoted service path, attackers can trigger privilege escalation whenever the service is restarted or the system reboots, ultimately executing the code with LocalSystem privileges. This vulnerability underscores the significant risks associated with improper service path configurations.

Affected Version(s)

IObit Malware Fighter 4.3.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2016-20059 - Proof of Concept

References

https://www.exploit-db.com/exploits/40525
exploit
http://www.iobit.com/en/index.php
product
http://www.iobit.com/downloadcenter.php?product=malware-f...
product

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Amir.ght
.