Read the docs
TI-2017-14284 Aliases CVE-2017-20218GHSA-mxj5-2p9r-3838

Serviio PRO 1.8 Local Privilege Escalation via Unquoted Path

Priority HIGH 72CWE-428Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-428.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00146 3rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ServiioServiio PRO1.8.0.0 PRO; 1.7.1; 1.7.0; 1.6.1—No fix listedCNA
  • Serviio PRO VendorServiio Affected 1.8.0.0 PRO; 1.7.1; 1.7.0; 1.6.1 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-20218
  2. 2026-10-03 Alias added: GHSA-mxj5-2p9r-3838

References

Exploit 2

Advisory 2

  • TI-2017-14286 Serviio PRO 1.8 Unauthenticated Password Change via REST API CVSS 4.0HIGH 8.7
  • TI-2017-14283 Serviio PRO 1.8 REST API Information Disclosure CVSS 4.0HIGH 8.7
  • TI-2017-14285 Serviio PRO 1.8 DOM-based Cross-Site Scripting via mediabrowser CVSS 4.0MEDIUM 5.1
  • TI-2025-24261 Serviio Media Server Unauthenticated Command Injection via checkStreamUrl VIDEO Parameter CVSS 4.0CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences