CVE-2017-20218 Serviio PRO 1.8 Local Privilege Escalation via Unquoted Path
Local attackers can escalate privileges to execute arbitrary code by exploiting unquoted service paths and weak directory permissions in Serviio PRO.
- 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-2017-20218?
CVE-2017-20218 is a high-severity vulnerability in Serviio PRO, published on 15 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Serviio PRO 1.8 contains an unquoted search path vulnerability in the Windows service that allows local users to execute arbitrary code with elevated privileges by placing malicious executables in the system root path. Additionally, improper directory permissions with full access for the Users group allow authenticated users to replace the executable file with arbitrary binaries, enabling privilege escalation during service startup or system reboot.
Weakness: CWE-428
Which versions are affected by CVE-2017-20218?
How do I fix CVE-2017-20218?
No fix has been published for CVE-2017-20218 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-20218 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20218 exists.
Sources
Also known as GHSA-mxj5-2p9r-3838.