CVE-2017-20220Public exploitNetwork attack vector

Unauthenticated password replacement via remote-access PUT

Published Mar 15, 2026 · Updated Mar 15, 2026

Missing authentication in Serviio PRO 1.6.1 through 1.8.0.0 PRO allows remote attackers to change the mediabrowser password. The Configuration REST API accepts an unauthenticated PUT to /rest/remote-access and writes the supplied remoteUserPassword value as the remote-access credential. Network access to the console service, which uses port 23423 by default, is sufficient to replace the password protecting the mediabrowser page.

CVSS severity8.7
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Serviio PRO 1.6.1 through 1.8.0.0 PRO allows remote attackers to change the mediabrowser password. The Configuration REST API accepts an unauthenticated PUT to /rest/remote-access and writes the supplied remoteUserPassword value as the remote-access credential. Network access to the console service, which uses port 23423 by default, is sufficient to replace the password protecting the mediabrowser page.

The record

CVE
CVE-2017-20220
Published
Mar 15, 2026
Updated
Mar 15, 2026
Vendor
Serviio
Product
Serviio Pro
Classifications
CWE-306, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.1
  2. Affected versionversion=1.7.0
  3. Affected versionversion=1.7.1
  4. Affected versionversion=1.8.0.0 PRO

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Serviio · Serviio Proversion=1.6.1; version=1.7.0; version=1.7.1; version=1.8.0.0 PRO

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1098Account Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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