CVE-2025-60228

HighRCE

Published: 22 October 2025

Published

22 October 2025

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0011 29.5th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-60228 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-60228 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the designthemes Knowledge Base (kbase) WordPress theme, enabling Object Injection. The issue affects Knowledge Base theme versions from n/a through 2.9 inclusive. Published on 2025-10-22, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact.

An authenticated attacker with low privileges (PR:L) can exploit this vulnerability remotely over the network (AV:N) with low attack complexity (AC:L) and without requiring user interaction (UI:N). Successful exploitation allows high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), stemming from the object injection enabled by untrusted deserialization.

Patchstack has issued an advisory documenting the PHP Object Injection vulnerability specifically in Knowledge Base theme version 2.9, available at https://patchstack.com/database/Wordpress/Theme/kbase/vulnerability/wordpress-knowledge-base-theme-2-9-php-object-injection-vulnerability?_s_id=cve.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-35401

Vulnerability details

Deserialization of Untrusted Data vulnerability in designthemes Knowledge Base kbase allows Object Injection.This issue affects Knowledge Base: from n/a through <= 2.9.

CWE(s): CWE-502

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

Deserialization of Untrusted Data (PHP Object Injection) in a WordPress theme enables remote exploitation of a public-facing web application by authenticated low-privilege users, leading to arbitrary code execution, directly facilitating T1190: Exploit Public-Facing Application.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0