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Vulnerability record · CVE-2017-20220 · published 16 March 2026

CVE-2017-20220: Missing authentication for critical function vulnerability

Serviio PRO 1.8 contains an improper access control vulnerability in the Configuration REST API that allows unauthenticated attackers to change the mediabrowser login password. Attackers can send specially crafted requests to the REST API endpoints to modify credentials without authentication.

8.7 CVSS 4.0 High EPSS 0.40% · top 68.9% CWE-306 · Missing authentication for critical function Deferred
8.7CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Serviio PRO 1.8 contains an improper access control vulnerability in the Configuration REST API that allows unauthenticated attackers to change the mediabrowser login password. Attackers can send specially crafted requests to the REST API endpoints to modify credentials without authentication.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:

References

LinkTags
http://www.securitylab.ru/poc/486047.php
https://blogs.securiteam.com/index.php/archives/3094
https://cxsecurity.com/issue/WLB-2017050025
https://exchange.xforce.ibmcloud.com/vulnerabilities/125645
https://packetstormsecurity.com/files/142386
https://www.exploit-db.com/exploits/41960/
https://www.vulncheck.com/advisories/serviio-pro-unauthenticated-password-change-via-rest-api
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5407.php

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Source: NIST National Vulnerability Database (record CVE-2017-20220), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.