Cacti up to 1.2.28 SNMP command injection

Summaryinfo

A vulnerability classified as critical has been found in Cacti up to 1.2.28. This vulnerability affects unknown code of the component SNMP Handler. Performing a manipulation results in command injection. This vulnerability is known as CVE-2025-66399. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cacti up to 1.2.28. It has been classified as critical. This affects some unknown processing of the component SNMP Handler. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-66399 since 11/29/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 1.2.29 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-200287) and CERT Bund (WID-SEC-2025-2720). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Open Source Cacti

Productinfo

Type

• Log Management Software

Name

• Cacti

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13
• 1.2.14
• 1.2.15
• 1.2.16
• 1.2.17
• 1.2.18
• 1.2.19
• 1.2.20
• 1.2.21
• 1.2.22
• 1.2.23
• 1.2.24
• 1.2.25
• 1.2.26
• 1.2.27
• 1.2.28

License

• open-source

Website

• Product: https://github.com/Cacti/cacti/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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