Release Notes for v2.5.1

Date: 18th November, 2025

MetaDefender Sandbox 2.5.0 Release Notes

Sandbox 2.5.1 provides OCM-10 integration and several enhancements in this release.

What’s New

• OCM-10 Integration - Enhanced OCM - Sandbox integration with support for, license management, and health monitoring for improved centralized management.

• Offline Mode Certificate Validation - Added a transform configuration to whitelist signed files without revocation checks; auto-enabled in air-gapped environments, but can be disabled for maximum security.

Improvements

• Offline URL Model Update - The URL Reputation Predictor (formerly Offline URL Model) now packs twice the training data for stronger, smarter predictions.

• Stability & Security - Updated core dependencies to enhance performance and security.

Bug Fixes

• Trends Page Accuracy - Improved IOC accuracy by refining query logic and whitelisting trusted domains.

• Trends Page “Last 24 Hours” Filter - Fixed filtering logic to ensure accurate 24-hour statistics.

• YARA Rules Display - Improved YARA rule handling in the UI to ensure consistent and accurate display for similarly named rules.

• Email History Pagination - Fixed pagination on the email history page to display unique and accurate results across all pages.