CVE-2025-66399

SNMP Command Injection leads to RCE in Cacti

State: Published
Severity: 7.4 High
Published: Dec 2, 2025
Updated: Dec 8, 2025
Reserved: Nov 28, 2025

Description

Cacti is an open source performance and fault management framework. Prior to 1.2.29, there is an input-validation flaw in the SNMP device configuration functionality. An authenticated Cacti user can supply crafted SNMP community strings containing control characters (including newlines) that are accepted, stored verbatim in the database, and later embedded into backend SNMP operations. In environments where downstream SNMP tooling or wrappers interpret newline-separated tokens as command boundaries, this can lead to unintended command execution with the privileges of the Cacti process. This vulnerability is fixed in 1.2.29.

Scores

CVSS	Score	Vector	Source
4.0	7.4 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
cactiCacti	< 1.2.29Affected

References

https://github.com/Cacti/cacti/security/advisories/GHSA-c7rr-2h93-7gjf

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