CVE-2025-54686 CRITICAL

CVE-2025-54686: WordPress Exertio Theme <= 1.3.2 - PHP Object Injection Vulnerability

Vendor Scriptsbundle

Product Exertio

Weakness CWE-502 · Unsafe deserialization

Published August 14, 2025

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in scriptsbundle Exertio exertio allows Object Injection.This issue affects Exertio: from n/a through <= 1.3.2.

Explanation of Vulnerability in Simple Terms

02Summary

Exertio versions 1.3.2 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the server. The vulnerability exists in how the application processes untrusted serialized data without proper validation. An attacker can exploit this remotely over the network without requiring user interaction or authentication.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the server, read sensitive files, modify data, or take the site offline.

Potential impact on your site

04Site Impact

Complete compromise of the server and all data hosted on it; attacker gains full control.

Conditions required to exploit

05Prerequisites

Network access to the vulnerable Exertio installation; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 14, 2025 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-54686 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html

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