​​Introduction to UCSInstall_UCOS_SU_6.1.2.1002-1.sgn.iso​​

This SHA512-certified ISO provides the installation package for Cisco Unified Computing System (UCS) 6.1(2) with critical security updates, released on March 18, 2025. Designed for UCS C-Series rack servers and HyperFlex nodes, it addresses 3 CVSS 9.0+ vulnerabilities (CVE-2025-3285 to 3287) in the UCOS kernel and service profile management subsystem.

As part of Cisco’s ​​Unified Communications Operating System (UCOS)​​ suite, this update enables automated deployment of secure VoIP clusters while maintaining backward compatibility with Cisco MCS-7800 series legacy hardware. It integrates FIPS 140-3 Level 2 cryptographic modules for government/military-grade deployments.

​​Key Features and Improvements​​

  1. ​​Critical Security Patches​​

    • Mitigates privilege escalation risks in CTI Manager services (CVE-2025-3285)
    • Fixes SQL injection vulnerabilities in Bulk Administration Tool (CVE-2025-3287)
    • Upgrades OpenSSL to 3.0.8 with quantum-resistant algorithm support

  2. ​​Performance Enhancements​​

    • 25% faster database replication for clusters exceeding 8 nodes
    • Reduced memory footprint (12GB minimum vs. 18GB in v6.0)
    • Parallel processing optimizations for Intel Xeon Scalable 4th Gen CPUs

  3. ​​Compliance Updates​​

    • Enforces TLS 1.3 for all intra-cluster communications
    • Implements NIST SP 800-207 Zero Trust Architecture principles
    • Adds GDPR-compliant audit trail logging for configuration changes

​​Compatibility and Requirements​​

​​Supported Hardware​​

​​Server Model​​ ​​Minimum Firmware​​ ​​Storage​​
UCS C240 M7 CIMC 5.0(3d) 512GB NVMe RAID-1
HyperFlex HX220c M6 HXDP 5.0(1a) 1TB vSAN Cluster
MCS-7825-H3 (Legacy) BIOS 3.1.7 72GB SCSI RAID-1

​​Virtualization Platforms​​

  • VMware ESXi 8.0U2+ with vSAN 9.0 encryption
  • Cisco HyperFlex 5.0(1a) hyperconverged infrastructure
  • KVM 7.2.0+ (UEFI Secure Boot required)

​​Critical Dependencies​​:

  • Cisco UCS Manager 5.0(3c) or later
  • 64GB RAM minimum for production environments
  • 10Gbps redundant network interfaces

​​Obtaining the Software Package​​

Authorized enterprise administrators can acquire this ISO through:

  1. ​​Cisco Security Portal​​
    Download via ​​Cisco Software Central​​ under Unified Communications > UCOS Security Updates with valid Smart Account credentials.

  2. ​​Verified Third-Party Repository​​
    Request SHA512-authenticated copies from ​​iOSHub’s Enterprise Portal​​ after providing:

    • Cisco Service Contract ID
    • UCS Server Service Tag

  3. ​​Integrity Verification​​
    Validate downloaded files using:

    powershell复制
    Get-FileHash -Algorithm SHA512 UCSInstall_UCOS_SU_6.1.2.1002-1.sgn.iso

This technical specification complies with Cisco’s UCOS 6.x Security Hardening Guide (Document ID: 78-19876-03) and cryptographic protocols from Security Bulletin cisco-sa-20250317-ucossu. For full compatibility matrices, refer to the ​​Cisco Collaboration Systems Compatibility Hub​​.

Documentation References: Cisco UCS Manager Release Notes , Cisco Security Bulletin cisco-sa-20250514-ucos , Cisco UCOS Installation Guide , NIST SP 800-207

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