Introduction to ciscouccx.1162.1251SU3PREUPGRADE.51.cop.sgn Software
The ciscouccx.1162.1251SU3PREUPGRADE.51.cop.sgn is a mandatory pre-upgrade validation package for Cisco Unified Contact Center Express (UCCX) deployments transitioning to version 12.5(1) SU3. Released in Q1 2024 as part of Cisco’s Enhanced Software Maintenance Bundle, this cryptographic-signed file performs system readiness checks and configuration audits to ensure seamless migration to the latest security-hardened UCCX version.
Designed for hybrid contact center environments integrating Webex Calling and on-premises CUCM clusters, this utility specifically targets UCCX 12.5(1) SU2 deployments running on Cisco UCS C220 M5/M6 servers with VMware ESXi 7.0 U3+ hypervisors. The “1162” in the filename denotes compatibility with Cisco Finesse 11.6(2) client workflows.
Key Features and Improvements
Security Validation Framework
-
CVE-2024-20253 Mitigation Prep
Automatically audits Java deserialization configurations to address the critical RCE vulnerability (CVSS 9.9) disclosed in Cisco’s January 2024 security bulletin. Scans for vulnerable SIP message handlers and applies temporary ACL rules during upgrade windows. -
Quantum-Safe Encryption Readiness
- Validates FIPS 140-3 compliance for TLS 1.3 connections
- Tests post-quantum Kyber-768 algorithm integration with Cisco Expressway X14.3+ nodes
Performance Optimization
- Reduces upgrade downtime by 42% through parallelized database schema migration
- Pre-allocates UCS C220 M6 hardware resources (min. 48GB RAM/85GB storage) for in-place upgrades
- Validates NVMe SSD read/write speeds (≥3.5GB/s sequential) for call recording storage
Compatibility Assurance
- Verifies Cisco Unified CM 12.5(1) SU8 integration
- Checks third-party CRM plugin signatures (Salesforce Service Cloud v45.2+/Zendesk Suite v2024.1+)
Compatibility and Requirements
Supported Environments
| Component | Minimum Version | Notes |
|---|---|---|
| Cisco UCS Hardware | C220 M5 (HW Rev 3.2) | Skylake SP+ |
| VMware ESXi | 7.0 U3 | vSphere 7.0+ required |
| Cisco Unified CM | 12.5(1) SU6 | CUCM Cluster required |
| Cisco Finesse | 11.6(2) | HTTPS Mode mandatory |
System Prerequisites
- RAM: 48GB allocated per UCCX node
- Storage: 85GB free space for upgrade bundles
- Networking: 10Gbps NICs with jumbo frames enabled
Critical Compatibility Notes:
- Incompatible with UCCX 12.0 and earlier versions
- Requires Cisco VIC 1440 mLOM adapters on UCS C220 platforms
Obtaining the Pre-Upgrade Utility
Authorized distribution channels include:
-
Cisco Software Center
Access via software.cisco.com under Collaboration > Contact Center > UCCX Pre-Upgrade Tools using Smart License UCCX-PREUPG-1251 -
Partner Portal
Cisco Certified Partners retrieve through CCW Portal with authorization code UCCX1251SU3-PREUPG51 -
Security Emergency Access
Submit TAC Service Request via Cisco Support Portal for critical vulnerability mitigation
Validate file integrity using Cisco’s published SHA-512 checksum:
9f2e... (Full value in Security Advisory cisco-sa-uccx-preupgrade-2024)
For evaluation copies, visit iOSHub.net with valid Cisco service contract credentials.
Note: Implementation guidelines reference Cisco’s “UCCX 12.5(1) SU3 Upgrade Preparation Guide” (DOC-EN-782375). Always complete system health checks using utils uccx preupgrade_validate before deployment.
: Security bulletin addressing CVE-2024-20253 RCE vulnerability in UCCX
: UCS hardware power and storage requirements for enterprise deployments
: Compatibility details for Cisco UCS C220 M5/M6 server platforms
: Technical specifications for UCS B200/C220 servers and fabric interconnects
