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CVE-2017-20218

7.8 · HIGH

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…

Published Mar 16, 2026CWE-428EPSS 0.14%

Overview

CVE-2017-20218 is a high-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblogs.securiteam.com/index.php/archives/3094Refcxsecurity.com/issue/WLB-2017050019Refexchange.xforce.ibmcloud.com/vulnerabilities/125644Refpacketstormsecurity.com/files/142384Refwww.exploit-db.com/exploits/41959/Refwww.vulncheck.com/advisories/serviio-pro-local-privilege-escalation-via-unquoted-pathRefwww.zeroscience.mk/en/vulnerabilities/ZSL-2017-5405.php

How CyberStrike helps

Frequently asked questions

What is CVE-2017-20218?

CVE-2017-20218 is a high-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2017-20218?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-20218?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-20218?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-20218 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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