Cyber Resilience

CVE-2025-52761

CriticalRCE

Published: 28 August 2025

Published
28 August 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 0.0014 33.6th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-52761 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 33.6th 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-2025-52761 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the WP Funnel Manager WordPress plugin (wp-funnel-manager), which allows Object Injection. The issue affects all versions from n/a through 1.4.0 and was published on 2025-08-28.

The vulnerability has 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 it can be exploited remotely over the network by unauthenticated attackers with low complexity and no user interaction required. Successful exploitation enables high-impact compromise of confidentiality, integrity, and availability, potentially leading to full system control via object injection.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/wp-funnel-manager/vulnerability/wordpress-wp-funnel-manager-plugin-1-4-0-php-object-injection-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in manfcarlo WP Funnel Manager wp-funnel-manager allows Object Injection.This issue affects WP Funnel Manager: from n/a through <= 1.4.0.

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?

Remote unauthenticated deserialization/object injection in public-facing WordPress plugin directly enables initial access via exploitation of a web application (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2024-13770Shared CWE-502
CVE-2026-27303Shared CWE-502
CVE-2025-53586Shared CWE-502
CVE-2025-64353Shared CWE-502
CVE-2025-31047Shared CWE-502
CVE-2026-27096Shared CWE-502
CVE-2023-49886Shared CWE-502
CVE-2026-23542Shared CWE-502
CVE-2025-66631Shared CWE-502
CVE-2026-40044Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly mitigates the CVE by requiring identification, reporting, and correction of the deserialization flaw in WP Funnel Manager versions through 1.4.0.

SI-10 Information Input Validation good match
prevent

Prevents object injection by enforcing validation of untrusted data inputs before deserialization in the vulnerable WordPress plugin.

RA-5 Vulnerability Monitoring and Scanning good match
detectrespond

Detects systems with the vulnerable WP Funnel Manager plugin via scanning and supports remediation to address the high-severity deserialization issue.

References