CVE-2025-13486
CriticalExploitedPublic exploitAdvanced Custom Fields: Extended 0.9.0.5 - 0.9.1.1 - Unauthenticated Remote Code Execution in prepare_form
Published Dec 5, 2025 · Updated Dec 3, 2025 · Also known as c508cb73-53e6-4ebe-b3d0-285908b722c9
Key Facts
Patch immediately- CVE-2025-13486 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting acf-extended (wordpress-plugin), Advanced Custom Fields: Extended.
- It is exploited in the wild, listed in Industry KEV feed since Dec 2, 2025. Public exploit code is available.
- EPSS estimates a 68% probability of exploitation in the next 30 days.
- Fixed versions are available, including acf-extended 0.9.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
68%
Higher than 99.3% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-13486 brief as a PDF
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Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Dec 2, 2025 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| acf-extendedwordpress-plugin | >= 0.9.0.5 | 0.9.2 |
| Advanced Custom Fields: Extended | >= 0.9.0.5 | n/a |
Patched Releases
acf-extended
0.9.2
Timeline
Added to Industry KEV feed
Dec 2, 2025
Last updated
Dec 3, 2025
Publicly disclosed
Dec 5, 2025
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-12374
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-13313
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-13342
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-13390
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-13486
FAQ
Common Questions.
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.
Affected: acf-extended (wordpress-plugin) versions >= 0.9.0.5; Advanced Custom Fields: Extended versions >= 0.9.0.5. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Dec 2, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including acf-extended 0.9.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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