How severe is CVE-2026-6204?

CVE-2026-6204 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-6204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6204?

CVE-2026-6204 affects Librenms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6204?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6204 have an EU (EUVD) identifier?

Yes. CVE-2026-6204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21908.

When was CVE-2026-6204 published?

CVE-2026-6204 was published on 2026-04-13 and last updated on 2026-06-17.

CVE-2026-6204

CVE-2026-6204 is a high-severity vulnerability in Librenms with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.5
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21908
Weakness: CWE-78
Affected product: Librenms
Published: 2026-04-13
Last modified: 2026-06-17

Description

LibreNMS versions before 26.3.0 are affected by an authenticated remote code execution vulnerability by abusing the Binary Locations config and the Netcommand feature. Successful exploitation requires administrative privileges. Exploitation could result in compromise of the underlying web server.

Frequently asked questions

What is CVE-2026-6204?: LibreNMS versions before 26.3.0 are affected by an authenticated remote code execution vulnerability by abusing the Binary Locations config and the Netcommand feature. Successful exploitation requires administrative privileges. Exploitation could result in compromise of the underlying web server.
How severe is CVE-2026-6204?: CVE-2026-6204 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-6204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6204?: CVE-2026-6204 affects Librenms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6204?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6204 have an EU (EUVD) identifier?: Yes. CVE-2026-6204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21908.
When was CVE-2026-6204 published?: CVE-2026-6204 was published on 2026-04-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

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