CVE-2025-26763

CriticalRCE

Published: 22 February 2025

Published

22 February 2025

Modified

23 April 2026

KEV Added

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Patch

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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0011 28.8th percentile

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

Summary

CVE-2025-26763 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as Other Platforms; in the Supply Chain and Deployment risk domain.

The strongest mitigations our analysis identified are NIST 800-53 CM-11 (User-installed Software) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2025-26763 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the MetaSlider Responsive Slider WordPress plugin (ml-slider) that allows Object Injection. This issue affects Responsive Slider by MetaSlider versions from n/a through 3.94.0. The vulnerability was published on 2025-02-22 and carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity.

Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no user interaction required. Successful exploitation enables high-impact compromise of confidentiality, integrity, and availability, potentially leading to severe outcomes such as remote code execution via object injection in the PHP-based plugin environment.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/ml-slider/vulnerability/wordpress-slider-gallery-and-carousel-by-metaslider-image-slider-video-slider-plugin-3-94-0-php-object-injection-vulnerability?_s_id=cve provides further details on the vulnerability, including mitigation recommendations.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-4431

Vulnerability details

Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider ml-slider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through <= 3.94.0.

CWE(s): CWE-502

AI Security AnalysisAI

AI Category: Other Platforms
Risk Domain: Supply Chain and Deployment
OWASP Top 10 for LLMs 2025: None mapped
Classification Reason: Matched keywords: ml

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 CVE describes an unauthenticated remote deserialization/object injection vulnerability in a public-facing WordPress plugin leading to RCE, directly enabling exploitation of public-facing applications.

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