CVE-2025-64374Network attack vector

Subscriber-level code execution via unchecked plugin installation

Published Dec 18, 2025 · Updated Dec 18, 2025

Arbitrary plugin installation in StylemixThemes Motors 5.6.81 and earlier allows remote authenticated users to execute code. The mvl_theme_install_base AJAX handler accepts an attacker-controlled plugin URL and installs and activates its code after checking only a nonce, without a capability check. Subscriber-level access exposes the nonce and is sufficient to run malicious plugin code and take over the WordPress site.

CVSS severity9.9
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary plugin installation in StylemixThemes Motors 5.6.81 and earlier allows remote authenticated users to execute code. The mvl_theme_install_base AJAX handler accepts an attacker-controlled plugin URL and installs and activates its code after checking only a nonce, without a capability check. Subscriber-level access exposes the nonce and is sufficient to run malicious plugin code and take over the WordPress site.

The record

CVE
CVE-2025-64374
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, CAPEC-17, T1505
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.9PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-17Using Malicious Files
T1505Server Software Component

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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