CVE-2020-15874Public exploitNetwork attack vector

Authenticated shell execution via unescaped graph title

Published Aug 26, 2026 · Updated Aug 26, 2026

Command injection in LibreNMS 1.65 allows remote authenticated users with normal privileges to execute arbitrary shell commands via graph.php. The graph_error function concatenates an unescaped, request-controlled graph title into rrdtool options that are passed to a spawned process. A normal LibreNMS account and network access to graph.php are required, and injected commands run under the web server account.

CVSS severityUnavailable
Unscored
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in LibreNMS 1.65 allows remote authenticated users with normal privileges to execute arbitrary shell commands via graph.php. The graph_error function concatenates an unescaped, request-controlled graph title into rrdtool options that are passed to a spawned process. A normal LibreNMS account and network access to graph.php are required, and injected commands run under the web server account.

The record

CVE
CVE-2020-15874
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('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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