Authenticated code execution via scheduled task file write
Published Jul 2, 2025 · Updated Mar 23, 2026
Code injection in Lucee 5.0, 6.0, and all versions with scheduled tasks allows remote authenticated users to execute service-account code. The scheduled-task handler accepts an attacker-controlled URL and destination path, retrieves a remote .cfm file, writes it under the webroot, and runs it without integrity, path, or execution controls. Administrative access to /lucee/admin/web.cfm is required, and the resulting code runs with Lucee service-account privileges.
Summary
What happened
Code injection in Lucee 5.0, 6.0, and all versions with scheduled tasks allows remote authenticated users to execute service-account code. The scheduled-task handler accepts an attacker-controlled URL and destination path, retrieves a remote .cfm file, writes it under the webroot, and runs it without integrity, path, or execution controls. Administrative access to /lucee/admin/web.cfm is required, and the resulting code runs with Lucee service-account privileges.
The record
- CVE
- CVE-2025-34074
- Published
- Jul 2, 2025
- Updated
- Mar 23, 2026
- Vendor
- Lucee Association Switzerland
- Product
- Lucee
- Classifications
- CWE-94, CWE-829, CAPEC-242, CAPEC-137, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jul 2, 2025CVE publishedPublication date reported by the CVE source.
- Mar 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.0
- Affected versionversion=6.0
- Affected versionversion=All versions with scheduled task functionality
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Lucee Authenticated Scheduled Job Code Executionweaponized · demonstrated
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Technologies
Your stack
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Your stack
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