Auth bypass in Serviio Pro
CVE-2017-20220
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Serviio Pro — versions 1.8.0.0 PRO, 1.6.1, 1.7.1
Weakness classification (CWE)
References
- www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5407.php (third-party-advisory)
- blogs.securiteam.com/index.php/archives/3094 (third-party-advisory)
- www.exploit-db.com/exploits/41960/ (exploit)
- packetstormsecurity.com/files/142386 (exploit)
- cxsecurity.com/issue/WLB-2017050025 (third-party-advisory)
- www.securitylab.ru/poc/486047.php (third-party-advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/125645 (vdb-entry)
- www.vulncheck.com/advisories/serviio-pro-unauthenticated-password-change-via-re… (third-party-advisory)
Frequently asked questions
- What is CVE-2017-20220?
- CVE-2017-20220 is a high-severity vulnerability in Serviio Pro, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-03-16.
- How severe is CVE-2017-20220?
- High severity. CVSS v3 base score is 7.5 out of 10.