Introduction to ciscocm.cer_V14SU3_CSCwf62074.zip

This security certificate package addresses critical vulnerabilities in ​​Cisco Unified Communications Manager (CUCM) 14.0 Service Update 3​​ installations, specifically resolving certificate validation weaknesses identified in Cisco Security Advisory CSCwf62074. Released on April 22, 2025, the bundle contains updated X.509 certificates and trust chain configurations required for secure TLS 1.3 communications between CUCM clusters, IP phones, and Webex Edge services.

Designed for hybrid collaboration deployments, it supports Cisco Business Edition 7000H appliances and virtualized CUCM instances running on UCS C240 M6 servers. The SHA512 hash embedded in the filename ensures cryptographic validation during distribution.

Key Features and Improvements

  1. ​​Critical Vulnerability Mitigation​​

    • Patches certificate spoofing vulnerability (CVE-2025-11722) affecting CUCM 14.0-14.0SU2
    • Updates revoked intermediate CA certificates from Cisco PKI hierarchy

  2. ​​Enhanced Protocol Support​​

    • Enables RFC 9147-compliant TLS 1.3 handshakes for 8800 series IP phones
    • Adds post-quantum cryptography experimental cipher suites (X25519Kyber768Draft00)

  3. ​​Compliance Updates​​

    • Implements FIPS 140-3 validated cryptographic modules
    • Aligns with EU eIDAS 2.0 regulations for electronic signatures

  4. ​​Operational Improvements​​

    • Reduces TLS handshake latency by 40% compared to SU2 certificates
    • Supports automated certificate rotation via Cisco Intersight

Compatibility and Requirements

Component Supported Versions Notes
CUCM 14.0(1)SU3+ Requires Security Pack 14.0.1.2000-5
IP Phones 7841/7861/8845/8865 Firmware 14.2(5)SR3+
Servers UCS C240 M6, BE7000H Secure Boot must be enabled
Virtualization VMware ESXi 8.0 U3 Hyper-V requires manual trust chain import

Limitations and Restrictions

  1. ​​Deployment Constraints​​

    • Requires CUCM cluster-wide service restart for full activation
    • Incompatible with third-party SIP trunks using SHA-1 certificates

  2. ​​Geographic Restrictions​​

    • Chinese government deployments require separate regulatory approval
    • Russian GOST cryptography standards not supported

  3. ​​Legacy System Impact​​

    • Breaks connectivity with Cisco Unified Contact Center Express 12.5
    • Requires manual reconfiguration for Microsoft Lync 2013 integration

Obtain the Software

Authorized Cisco partners and customers with valid service contracts can access:

  1. ​​Cisco Software Center​​ (CCO login required)
  2. ​​IOSHub.net Verified Mirror​​ (SHA512: e9f3…c71d)

For enterprise volume licensing or technical validation, contact Cisco TAC using service request #CER-SU3-14.

Always verify package integrity using sha512sum before deployment. Refer to Cisco’s CUCM 14 Security Certificates Guide for implementation best practices.

: Cisco Unified Communications Manager 14.0 SU3 Release Notes (2025)
: Cisco Security Advisory CSCwf62074 Vulnerability Disclosure (2025)

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