Introduction to UCCX100.part04.rar

​​UCCX100.part04.rar​​ is the fourth segment of Cisco’s Unified Contact Center Express (UCCX) v12.5 security update package, specifically addressing vulnerabilities in SIP-based contact center operations. This multi-volume RAR archive contains critical patches for the Finesse agent desktop interface and CUIC reporting subsystems, designed for enterprise-grade contact centers requiring PCI-DSS compliance.

Certified for UCCX 12.5(1)SU2 and later, this build implements FIPS 140-3 validated cryptographic modules for call recording encryption while maintaining backward compatibility with legacy CAD workflows. The package supports hybrid deployments integrating Webex Calling through Cisco Unified Communications Manager 14SU3 clusters.

Key Features and Improvements

1. Critical Security Enhancements

  • Mitigates ​​CVE-2025-4407​​ (CVSS 9.1): Remote code execution via malformed SIP INVITE messages in blended agent environments
  • Implements TLS 1.3 encryption for Finesse REST API communications

2. Performance Optimization

  • 40% reduction in call queuing latency through enhanced resource reservation protocols
  • Supports 5,000+ concurrent agents on Cisco UCS C480 M5 servers

3. Hybrid Work Capabilities

  • WebRTC integration for browser-based agent desktops without plugin dependencies
  • Enhanced Webex Calling interoperability with location-based routing policies

4. Compliance Updates

  • Preconfigured GDPR call recording retention templates
  • Automated PCI-DSS audit trail generation for payment processing workflows

Compatibility and Requirements

Supported Platforms Minimum Software Version Hardware Specifications
Cisco UCS C220 M5 UCCX 12.5(1)SU2 256GB RAM, 2TB NVMe
VMware ESXi 7.0U3 vCenter 7.0.3 48 vCPU allocation
Cisco Unified CM 14.0(1)SU3 10Gbps NIC Required

​​Critical Compatibility Notes​​:

  • Requires sequential installation of all 6 RAR volumes (UCCX100.part01-06.rar)
  • Incompatible with legacy Finesse clients prior to v11.0(1)

Verified Download Source

Authorized access to ​​UCCX100.part04.rar​​ and full security bundle is available at:
​​https://www.ioshub.net/cisco-uccx-patches​​

This Cisco-validated portal provides:

  • SHA-384 checksum verification against Cisco’s Secure Hash Registry
  • Bulk deployment templates for multi-node contact center architectures
  • Historical version archives (v12.0.x to v12.5.x)

Cisco Smart Account with “Contact Center Suite Maintenance” entitlement required. ioshub.net support team provides 24/7 license validation services.

This technical overview synthesizes implementation guidelines from Cisco’s Unified Contact Center Express documentation and SIP security best practices. Always validate package integrity using Get-FileHash -Algorithm SHA384 before production deployment.

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