Vulnerability Intelligence Report
Advanced Custom Fields: Extended 0.9.0.5 - 0.9.1.1 - Unauthenticated Remote Code Execution in prepare_form
CVE-2025-13486
The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to Remote Code Execution in versions 0.9.0.5 through 0.9.1.1 via the prepare_form() function. This is due to the function accepting user input and then passing that through call_user_func_array(). This makes it possible for unauthenticated attackers to execute arbitrary code on the server, which can be leveraged to inject backdoors or create new administrative user accounts.
Nuclei Template
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:73.56%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-94 ↗CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| hwk-fr | Advanced Custom Fields: Extended | 0.9.0.5 <= 0.9.1.1 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Wordfence · Vendor · USA |
| Reserved | 2025-11-20T17:33:07 |
| Published | 2025-12-03T06:47:46 |
| Last Updated | 2025-12-03T14:32:58 |
Community Chatter & Buzz