What’s Vulnerable › Vulnerabilities

CVE-2017-20218: Serviio PRO 1.8 Local Privilege Escalation via Unquoted Path

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-428

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.

Affected products

• Serviio PRO: 1.8.0.0 PRO, 1.7.1, 1.7.0, 1.6.1

References

• https://blogs.securiteam.com/index.php/archives/3094
• https://cxsecurity.com/issue/WLB-2017050019
• https://exchange.xforce.ibmcloud.com/vulnerabilities/125644
• https://packetstormsecurity.com/files/142384
• https://www.exploit-db.com/exploits/41959/
• https://www.vulncheck.com/advisories/serviio-pro-local-privilege-escalation-via-unquoted-path
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5405.php

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