CriticalPublic exploit

Authenticated RCE in Lucee scheduled task functionality

IdentifiersCVE-2025-34074CWE-434

CVE-2025-34074 is an authenticated remote code execution vulnerability in Lucee's administrative interface, specifically in the scheduled task functionality exposed via /lucee/admin/web.cfm. An administrator can configure a scheduled task to fetch a remote attacker-controlled .cfm file. Lucee then writes that file into the webroot and allows it to be executed by the server with the privileges of the Lucee service account. The issue stems from insecure design in the scheduled task feature: Lucee does not enforce sufficient integrity validation, path restrictions, or execution controls on fetched task content. As a result, the feature can be abused to place and execute arbitrary ColdFusion Markup Language code on the target system. The provided content explicitly notes that this issue is distinct from CVE-2024-55354.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation results in arbitrary code execution on the Lucee server in the security context of the Lucee service account. An attacker with the required administrative access can deploy and execute malicious .cfm code, which may enable full application compromise, access to sensitive data available to the application, server-side command execution depending on service account privileges and Lucee configuration, persistence through planted web-accessible code, and potential lateral movement from the compromised host.

Mitigation

If you can’t patch tonight, do this now.

Restrict access to /lucee/admin/web.cfm to a minimal set of trusted administrators and limit network exposure of the Lucee administrative interface. Disable or tightly control scheduled task functionality that retrieves remote content, especially from untrusted hosts. Prevent scheduled tasks from writing executable content into the webroot where possible. Apply outbound network restrictions so the Lucee server cannot fetch arbitrary remote files from attacker-controlled infrastructure. Monitor for creation of new or modified .cfm files in the webroot and for suspicious scheduled task definitions or executions.

Remediation

Patch, then assume compromise.

Upgrade to a Lucee version in which the scheduled task functionality no longer permits unsafe retrieval and execution of remote .cfm content, and where appropriate integrity validation, path restrictions, and execution controls have been implemented. If a vendor patch or fixed release is available, apply it promptly. Review existing scheduled tasks for unauthorized or suspicious remote fetch configurations, remove any malicious or unnecessary tasks, and inspect the Lucee webroot for unexpected .cfm files that may have been written and executed through this mechanism.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

lucee_scheduled_job.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module: 'lucee_scheduled_job.rb', which targets Lucee servers with an exposed administrative web interface. The exploit leverages the ability of an authenticated admin to create a scheduled job that fetches and executes a remote ColdFusion (.cfm) file. The module starts a local HTTP server to serve a malicious .cfm payload, instructs the Lucee server to schedule and execute a job that fetches this payload, and thus achieves remote code execution as the Lucee service user. The payload is customizable and can execute arbitrary OS commands (via cmd.exe on Windows or /bin/bash on Unix). The exploit requires valid admin credentials and network access to the Lucee admin interface (default: /lucee/admin/web.cfm, port 8888). The module cleans up after itself by removing the scheduled job. Artifacts may be left in Lucee log files and the webroot. The code is mature, weaponized, and part of the Metasploit framework.

Disclosed Feb 10, 2023rubynetwork

ACTIVITY FEED

Recent activity

6 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

6 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6