CVE-2018-13859: MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2018-13859 is a critical-severity flaw (CVSS 9.8) affecting c4 professional firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.07.18, allow unauthorized remote attackers to reset the authentication via the "/xml/system/setAttribute.xml" URL, using the GET request "?id=0&attr=protectAccess&newValue=0" (a successful attack will allow attackers to login without authorization).

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	17.2% (top 3%)
CISA exploited list	No
Published	2018-07-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: trivum

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-17 14:29 UTCPublished CVE record published
2026-06-17 01:40 UTCUpdated Record last modified

trivum c4 professional firmware MITIGATE

Affected: 8.76

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.76

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Trivum Multiroom Setup Tool 8.76 - Corss-Site Request Forgery (Admin Bypass)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-13859?

c4 professional firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-13859 being exploited?

CVE-2018-13859 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-13859 affect?

CVE-2018-13859 affects c4 professional firmware. Severity is critical (CVSS 9.8). MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.07.18, allow unauthorized remote attackers to reset the authentication via the "/xml/system/setAttribute.xml" URL, using the GET r

How urgent is CVE-2018-13859?

Priority 69/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-13860 HIGH 7.5 MITIGATE MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.
CVE-2018-13858 CRITICAL 9.8 MITIGATE MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional allows unauthorized remote att

References

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