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CVE-2026-40079

Cacti command injection

9.8 CRITICALEPSS 1.69%
  1. Published24 Jun 2026

Description

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Command Injection due to lack of sanitization in the escape_command() function. The escape_command() function at lib/rrd.php is a no-op: it returns $command unchanged. The command line built by rrdtool_function_graph() is passed through this function and then to shell_exec($full_commandline). The risk is in __rrd_execute() where text_format values from graph templates (which may contain host variable substitutions) reach shell_exec without adequate escaping. This issue has been addressed in version 1.2.31.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Cacti< 1.2.31

Remediation

Fixed in
Cacti≥ 1.2.31

References

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Frequently asked

Is CVE-2026-40079 being actively exploited?

CVE-2026-40079 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.69%.

How severe is CVE-2026-40079?

CVE-2026-40079 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.69% probability of exploitation.

Which products are affected by CVE-2026-40079?

Affected products include Cacti.

How do I fix CVE-2026-40079?

Upgrade affected software to a fixed version, for example Cacti 1.2.31 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-40079 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.