CVE-2016-20059 IObit Malware Fighter 4.3.1 Unquoted Service Path Privilege Escalation
Local attackers can escalate privileges to LocalSystem by placing a malicious executable in the unquoted service path of IObit Malware Fighter.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-20059?
CVE-2016-20059 is a high-severity vulnerability in IObit Malware Fighter, published on 4 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-428
Which versions are affected by CVE-2016-20059?
It affects 1 product.
Products include Iobit Malware Fighter.
How do I fix CVE-2016-20059?
No fix has been published for CVE-2016-20059 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-20059 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20059 exists.
Other vulnerabilities in IObit Malware Fighter
Sources
Also known as GHSA-rjmh-3x6m-hgvq.