CVE-2024-29895
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCacti 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceCacti 1.3.x DEV branch contains an unauthenticated command injection vulnerability in cmd_realtime.php line 119. The $poller_id parameter is sourced from $_SERVER['argv'] which can be controlled via URL when PHP's register_argc_argv is On (default in PHP Docker images). An attacker can inject arbitrary commands via this vector.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Cacti installation and versionLocate the Cacti web application directory and check for version.php or similar version indicator files. Cacti 1.3.x DEV branch is the affected version.Affected if The installed Cacti version is 1.3.x DEV branch (development version)
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Locate cmd_realtime.php fileSearch for cmd_realtime.php in the Cacti installation directory, typically under the Cacti root or scripts folder.Affected if cmd_realtime.php exists and is web-accessible in the Cacti installation
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Check PHP register_argc_argv settingReview php.ini or run 'php -i | grep register_argc_argv' or check via phpinfo() to determine if register_argc_argv is set to On.Affected if PHP register_argc_argv is On (this is the default in PHP Docker images and enables the attack vector)
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Inspect vulnerable code in cmd_realtime.phpExamine line 119 of cmd_realtime.php for $_SERVER['argv'] usage being passed to shell execution functions without sanitization.Affected if The $poller_id parameter is sourced from $_SERVER['argv'] and used in command execution without proper validation
The environment is affected if running Cacti 1.3.x DEV branch with cmd_realtime.php accessible and PHP register_argc_argv enabled, allowing unauthenticated command injection via the poller_id parameter.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataDisable register_argc_argv in php.ini (set to Off) as an immediate workaround; apply vendor patch when available; restrict network access to cmd_realtime.php until fixed.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,312.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-29895 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-29895 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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