How serious is CVE-2017-20218?

This vulnerability has a CVSS score of 8.5 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2017-20218?

Yes, proof-of-concept exploit code for CVE-2017-20218 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2017-20218?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2017-20218?

To remediate CVE-2017-20218, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2017-20218

High

|8.5

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows a local attacker to run their own malicious code with higher privileges on a system by placing harmful files in a specific folder. It requires that the attacker has access to the system and can exploit weak permissions that let them replace important program files.

Technical 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.

CVSS Vector Analysis

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$4,158($1K-$5K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Mar 16, 2026

22 days ago

Last Modified

Mar 16, 2026

22 days ago