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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-47553

HIGH · 8.8 CVSS v3.1 Published 2026-01-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Deserialization of Untrusted Data vulnerability in Digital zoom studio DZS Video Gallery allows Object Injection.This issue affects DZS Video Gallery: from n/a through 12.25.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A PHP Object Injection vulnerability exists in DZS Video Gallery plugin where untrusted data is deserialized without proper validation. This allows attackers to inject arbitrary PHP objects, potentially leading to remote code execution if gadget chains exist in the application or included libraries.

MitigationUpdate DZS Video Gallery to the latest version beyond 12.25. If no patched version is available, disable the plugin until a fix is released. Consider implementing whitelist-based input validation for any deserialization operations.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify DZS Video Gallery installation
    Locate the DZS Video Gallery plugin files in your WordPress or PHP application's plugin directory, typically under wp-content/plugins/dzs-videogallery or similar path. Check for a main plugin file containing the version number.
    Affected if The plugin folder dzs-videogallery exists in your plugins directory.
  2. Determine installed plugin version
    Open the main plugin PHP file (usually index.php or a file named dzs-video-gallery.php) and look for a version constant or header comment. Alternatively, check the plugin's readme.txt file for the Version: field.
    Affected if The version number found is lower than 12.25 (e.g., 12.24, 12.0, older).
  3. Identify deserialization entry points
    Search plugin PHP files for unserialize() function calls, particularly those handling user-supplied data from $_GET, $_POST, $_REQUEST, or database fields. Look for code patterns like unserialize($_POST['...']) or similar without validation.
    Affected if The plugin contains unserialize() calls processing untrusted input without prior sanitization or validation.
  4. Check for exposed admin or AJAX endpoints
    Examine the plugin for AJAX action handlers (wp_ajax_*) or admin pages that process serialized data. Verify if these endpoints are accessible without proper capability checks or nonce validation.
    Affected if AJAX or admin endpoints exist that can be reached remotely and invoke the vulnerable unserialize() functionality.
  5. Review server access logs for exploitation attempts
    Search web server access logs (Apache/nginx) for patterns containing base64-encoded PHP serialized objects or known gadget chain payloads sent to DZS Video Gallery URLs. Look for requests to plugin AJAX handlers with suspicious serialized data.
    Affected if Logs show requests to plugin endpoints containing PHP serialized objects or known exploitation patterns.

You are affected if DZS Video Gallery plugin version is below 12.25 AND the plugin's deserialization functionality processing untrusted input is accessible on your site.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update DZS Video Gallery to the latest version beyond 12.25. If no patched version is available, disable the plugin until a fix is released. Consider implementing whitelist-based input validation for any deserialization operations.

Recommended fix Moderate confidence

Latest version of DZS Video Gallery beyond version 12.25

  1. 1. Identify the current installed version of DZS Video Gallery in your WordPress installation
  2. 2. Check if the installed version is 12.25 or earlier
  3. 3. Before upgrading, backup your entire WordPress installation including database
  4. 4. Upgrade DZS Video Gallery to the latest available version beyond 12.25
  5. 5. Verify the upgrade was successful and the plugin functions correctly
  6. 6. Test that the deserialization vulnerability is no longer exploitable
Caveat Review plugin changelog for any deprecated features or required PHP/WordPress version changes before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-47553 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data