CVE-2026-6204: LibreNMS versions before 26.3.0 are affected by an authenticated remote code execution vulnerability by abusin

Q: How do I fix CVE-2026-6204?

librenms: upgrade to 26.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-6204 being exploited?

CVE-2026-6204 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-6204 affect?

CVE-2026-6204 affects librenms. Severity is high (CVSS 7.2). 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

Q: How urgent is CVE-2026-6204?

Priority 54/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This month

HIGH 7.2UPGRADE

CVE-2026-6204 is a high-severity flaw (CVSS 7.2) affecting librenms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	7.5% (top 6%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-04-13
Last modified	2026-06-17

Publisher (CNA): PRJBLK · Vendor: librenms

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

Am I affected?

Timeline

2026-04-13 11:16 UTCPublished CVE record published
2026-06-17 11:00 UTCUpdated Record last modified

librenms librenms UPGRADE

Affected: < 26.3.0

Fixed in: 26.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy librenms || rpm -q librenms || librenms --version

2. UPGRADE to 26.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade librenms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade librenms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-6204?

librenms: upgrade to 26.3.0. Exact commands for each OS are on this page.

Is CVE-2026-6204 being exploited?

CVE-2026-6204 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-2026-6204 affect?

CVE-2026-6204 affects librenms. Severity is high (CVSS 7.2). 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

How urgent is CVE-2026-6204?

Priority 54/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

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References

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