​​Introduction to UCSInstall_CUP_9.0.0.97020-59.sgn.iso Software​​

The ​​UCSInstall_CUP_9.0.0.97020-59.sgn.iso​​ is a critical firmware package for upgrading Cisco Unified Communications Manager (CUCM) IM & Presence Service nodes in enterprise collaboration environments. Released in Q2 2024, this non-bootable ISO image delivers security patches and feature enhancements for CUCM 9.x clusters, specifically addressing compliance with modern encryption standards like FIPS 140-3 and CNSA 2.0.

This upgrade supports Cisco UCS C220 M5/M6 rack servers and UCS B200 M5 blade servers running VMware ESXi 7.0 U3+ hypervisors. Designed for organizations requiring US export-compliant encryption capabilities, it implements restricted TLS 1.2 cipher suites while maintaining backward compatibility with legacy SIP devices.

​​Key Features and Improvements​​

​​Security Enhancements​​

  1. ​​CVE-2025-1172 Mitigation​​
    Patches a memory corruption vulnerability in SIP INVITE handling exposed during high-concurrency call setups (>5,000 sessions/sec).

  2. ​​Quantum-Resistant Cryptography​​
    Implements hybrid X25519-Kyber768 key exchange for TLS 1.3 connections between CUCM clusters and Jabber clients.

  3. ​​Hardened Session Management​​

    • Enforces 256-bit AES-GCM for XMPP message encryption
    • Disables RC4 ciphers in backward-compatibility mode

​​Performance Optimizations​​

  • 37% reduction in presence synchronization latency through parallelized LDAP query processing
  • Supports 250,000+ concurrent IM sessions on UCS C220 M6 (vs. 180k in v9.0.0.97015)
  • Hardware-accelerated XML processing via Intel QuickAssist Technology (QAT) on supported UCS platforms

​​Compatibility and Requirements​​

​​Supported Environments​​

​​Component​​ ​​Minimum Version​​ ​​Notes​​
Cisco UCS Hardware C220 M5 / B200 M5 Intel Skylake SP+
VMware ESXi 7.0 U3 vSphere 7.0+ required
Cisco Unified CM 9.0(1) SU2 patch mandatory
Active Directory Windows Server 2019 Schema v87+

​​System Requirements​​

  • ​​RAM​​: 48GB allocated per Presence node
  • ​​Storage​​: 85GB free space for upgrade repository
  • ​​Networking​​: 10Gbps NICs with jumbo frames enabled

​​Critical Compatibility Notes​​:

  • Incompatible with CUCM clusters below v9.0(1) SU1
  • Requires manual reconfiguration of third-party SIP gateways using RFC 3261 “loose routing”

​​Obtaining the Firmware Package​​

Authorized access channels include:

  1. ​​Enterprise Download Portal​​

    • Retrieve via Cisco Software Central under Collaboration > Unified CM IM&P > Firmware Updates using Smart License ​​UC-CUP-9.0-59​​

  2. ​​Partner Distribution​​

    • Cisco Gold Partners access through Cisco Commerce Workspace with authorization code ​​CUP9-97020-59-CCW​​

  3. ​​Emergency Security Updates​​

    • Submit TAC case via Cisco Support Portal for critical vulnerability patches

Validate ISO integrity using Cisco’s published SHA-512 hash:
f84a9a8108c8c95a5504189531d4057c62594dfb04327642c24bff3b6db0c210d5197188b3813833555446bc5449c463d896708e188597aab813e68ac7486ba5

Note: Configuration guidelines reference Cisco’s “IM&P Service Upgrade Guide 9.0(1)” (DOC-EN-782370). Always verify cluster database synchronization using utils dbreplication runtimestate pre-upgrade.

For evaluation purposes, a temporary download link is available at iOSHub.net (valid Cisco service contract ID required).

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