Is CVE-2025-3439 actively exploited?

No active exploitation of CVE-2025-3439 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-3439 be exploited remotely?

Yes. CVE-2025-3439 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-3439?

CVE-2025-3439 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2025-3439

CRITICAL

CVE-2025-3439

CWE-502Published: April 11, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the 'field_value' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

NVD Source

Risk Analysis

Everest Forms for WordPress is vulnerable to PHP Object Injection via the field_value parameter. While rated 9.8, the impact is dependent on the presence of a POP chain in other installed plugins or themes.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Update the Everest Forms plugin to the latest version. Audit installed plugins and themes to identify and remove any that contain dangerous POP chains.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-3439 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.