Cacti command injection in cmd_realtime.php

published 2024-05-13 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-26876

cvss: 10.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 98.8%; EPSS 98.8% chance of exploitation in 30 days, percentile 99.9%
public exploits: 0; none known, plus a Nuclei check

Cacti provides an operational monitoring and fault management framework. A command injection vulnerability on the 1.3.x DEV branch allows any unauthenticated user to execute arbitrary command on the server when `register_argc_argv` option of PHP is `On`. In `cmd_realtime.php` line 119, the `$poller_id` used as part of the command execution is sourced from `$_SERVER['argv']`, which can be controlled by URL when `register_argc_argv` option of PHP is `On`. And this option is `On` by default in many environments such as the main PHP Docker image for PHP. Commit 53e8014d1f082034e0646edc6286cde3800c683d contains a patch for the issue, but this commit was reverted in commit 99633903cad0de5ace636249de16f77e57a3c8fc.

Patch / fix

links 2

github.com/Cacti/cacti@53e8014 commit
github.com/Cacti/cacti@9963390 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 2 y ago (2024-05-13)

Exploit prediction

98.83% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Cacti cmd_realtime.php - Command Injection nuclei detection template

CVSS scores

assigned by	version	score	vector
CNA	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Cacti cacti

Classification

Weakness

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

References

Sources

CVE List CVE-2024-29895
NVD CVE-2024-29895

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary