CVE-2025-53586

HighRCE

Published: 06 November 2025

Published

06 November 2025

Modified

27 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 0.0012 30.3th percentile

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

Summary

CVE-2025-53586 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 30.3th 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 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2025-53586 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the NooTheme WeMusic WordPress theme (noo-wemusic), which allows Object Injection. This issue affects the theme from unknown initial versions through version 1.9.1.

The vulnerability 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). Low-privileged authenticated users, such as standard WordPress contributors, can exploit it over the network with low complexity and no user interaction, achieving high impacts on confidentiality, integrity, and availability through object injection.

Patchstack documents this PHP Object Injection vulnerability in their database entry for the WordPress WeMusic theme version 1.9.1, available at https://patchstack.com/database/Wordpress/Theme/noo-wemusic/vulnerability/wordpress-wemusic-theme-1-9-1-php-object-injection-vulnerability?_s_id=cve.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-37989

Vulnerability details

Deserialization of Untrusted Data vulnerability in NooTheme WeMusic noo-wemusic allows Object Injection.This issue affects WeMusic: from n/a through <= 1.9.1.

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?

The vulnerability is a critical deserialization flaw (CWE-502) in a public-facing WordPress theme, enabling unauthenticated remote object injection and site compromise, directly mapping to exploitation of public-facing applications.

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