CVE-2025-47552

DZS Video Gallery <= 12.39 - Unauthenticated PHP Object Injection

2025-05-20 00:00

Strategic Overview

Status: Patched in 12.40
Affected Plugin: DZS Video Gallery
Affected Version: <= 12.39
CVSS: 9.8Critical
Weakness type: CWE-502 · Deserialization of Untrusted Data
CVE: CVE-2025-47552

View all DZS Video Gallery vulnerabilities

At a glance

CVE-2025-47552 is a critical-severity Deserialization of Untrusted Data vulnerability in the DZS Video Gallery WordPress plugin, affecting versions <= 12.39. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 12.40; sites on affected versions should update now. Disclosed May 2025, reported by Tran Nguyen Bao Khanh.

Vulnerability Overview

The DZS Video Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 12.39 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-502: Deserialization of Untrusted Data

Reaching this weakness in DZS Video Gallery <= 12.39 takes no account at all. Deserialization of untrusted data means the application reconstructs objects from input a caller controls, letting the attacker choose which classes get instantiated and what their properties hold.

A workable chain turns deserialization into file writes, deletions or code execution, depending on what the loaded classes do in their magic methods. For DZS Video Gallery the fix is 12.40: builds <= 12.39 are affected, anything from 12.40 onward is not.

Remediation

Update to version 12.40, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: DZS Video Gallery 12.40 closes this, and updating the plugin is the step that ends it.

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External References

https://www.cve.org/CVERecord?id=CVE-2025-47552 https://www.wordfence.com/threat-intel/vulnerabilities/id/bf43d81f-2d34-4343-8b2a-e3288b1e21c5 https://nvd.nist.gov/vuln/detail/CVE-2025-47552

Related records

Same weakness class

8.8CVE-2025-47553: DZS Video Gallery <= 12.39 PHP Object InjectionCVE-2025-47553

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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