CVE-2026-80214Public exploitNetwork attack vector

Authenticated code execution via unsanitized libvirt settings

Published Aug 26, 2026 · Updated Aug 26, 2026

OS command injection in LibreNMS 23.10.0 through 26.4.0 allows remote authenticated users to execute code through virtualization settings. VminfoLibvirt.php concatenates Libvirt Username and Protocols values directly into ssh and virsh commands passed to exec without sanitization. Administrator access and a subsequent poller discovery job are required; injected commands run as the poller account and can compromise the host.

CVSS severity8.6
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in LibreNMS 23.10.0 through 26.4.0 allows remote authenticated users to execute code through virtualization settings. VminfoLibvirt.php concatenates Libvirt Username and Protocols values directly into ssh and virsh commands passed to exec without sanitization. Administrator access and a subsequent poller discovery job are required; injected commands run as the poller account and can compromise the host.

The record

CVE
CVE-2026-80214
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-78, CWE-77, CAPEC-88, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=23.10.0 <26.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

LibreNMS · LibreNMSversion=23.10.0 <26.4.1

Published CVSS scores

8.6Project Black CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC-88OS Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

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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