CVE-2025-66399
SNMP Command Injection leads to RCE in Cacti
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.
INFO
Published Date :
Dec. 2, 2025, 6:15 p.m.
Last Modified :
Dec. 5, 2025, 6:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Cacti to version 1.2.29.
- Validate SNMP community strings for control characters.
- Review database for malicious SNMP strings.
- Restrict access to SNMP configuration.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-66399.
| URL | Resource |
|---|---|
| https://github.com/Cacti/cacti/security/advisories/GHSA-c7rr-2h93-7gjf | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-66399 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-66399
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-66399 vulnerability anywhere in the article.
-
CybersecurityNews
Cacti Command Injection Vulnerability Let Attackers Execute Malicious Code Remotely
A critical command injection vulnerability in the open-source network monitoring tool Cacti allows authenticated attackers to execute arbitrary code remotely, potentially compromising the entire monit ... Read more
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Daily CyberSecurity
High-Severity Splunk Flaw Allows Local Privilege Escalation via Incorrect File Permissions on Windows
Splunk administrators managing Windows environments are being urged to patch immediately following the discovery of two high-severity vulnerabilities affecting both the Enterprise platform and Univers ... Read more
-
Daily CyberSecurity
High-Severity Cacti Flaw (CVE-2025-66399) Risks Remote Code Execution via SNMP Community String Injection
Image: Cacti A high-severity security flaw has been uncovered in Cacti, the popular open-source network graphing solution. The vulnerability, tracked as CVE-2025-66399, exposes Cacti installations to ... Read more
The following table lists the changes that have been made to the
CVE-2025-66399 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 05, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.29 Added Reference Type GitHub, Inc.: https://github.com/Cacti/cacti/security/advisories/GHSA-c7rr-2h93-7gjf Types: Exploit, Vendor Advisory -
CVE Modified by [email protected]
Dec. 02, 2025
Action Type Old Value New Value Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Removed CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X -
New CVE Received by [email protected]
Dec. 02, 2025
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-77 Added Reference https://github.com/Cacti/cacti/security/advisories/GHSA-c7rr-2h93-7gjf