Introduction to ciscocm.V14-SU2-SU2a_CSCwc26596_C0169-1.zip Software

The ​​ciscocm.V14-SU2-SU2a_CSCwc26596_C0169-1.zip​​ is a critical security update for Cisco Unified Communications Manager (CUCM) environments, designed to resolve certificate authority (CA) validation vulnerabilities outlined in Cisco defect ID CSCwc26596. This SHA512-signed COP file addresses a critical issue where systems failed to upload signed CA certificates when signer certificates shared identical initial words, a flaw that could compromise secure communication channels in enterprise telephony systems.

Developed for CUCM 14.0(1)SU2 clusters, this patch ensures compliance with X.509 certificate chain validation standards while maintaining backward compatibility with Cisco Unity Connection (CUC) 14.0.1.12900-69 and IM&P 14.0.1.12900-6/12901-1 deployments. The version identifier ​​V14-SU2-SU2a​​ indicates its integration with CUCM Service Update 2a, released on July 14, 2023, as part of Cisco’s quarterly security maintenance cycle.

Key Features and Improvements

  1. ​​Critical Security Resolution​​
    Eliminates the CSCwc26596 vulnerability that blocked secure CA certificate uploads, ensuring proper validation of cryptographic signatures in TLS/SSL communications. This prevents potential man-in-the-middle attacks targeting CUCM administrative interfaces.

  2. ​​Service Continuity Enhancements​​

  • Preserves Cisco Tomcat service stability during installation through controlled service restarts
  • Maintains cluster-wide consistency by requiring installation across all nodes
  1. ​​Diagnostic Tool Compatibility​​
    Resolves post-installation monitoring issues where Cisco Real-Time Monitoring Tool (RTMT) lost connectivity to cluster nodes for trace collection. Administrators can restore full functionality by manually restarting:
  • Cisco Trace Collection Service
  • Cisco Trace Collection Servlet
  1. ​​Rollback Mechanism​​
    Includes ​​ciscocm.V14-SU2-SU2a_CSCwc26596_C0169-1_revert.k4.cop.sha512​​ with MD5 checksum verification (d8dbd303c67bac3a23f6361a2a98d4a8) for safe restoration of pre-patch configurations.

Compatibility and Requirements

Component Supported Versions
CUCM Base 14.0.1.12900-161
14.0.1.13024-2
CUC 14.0.1.12900-69
IM&P 14.0.1.12900-6
14.0.1.12901-1
Virtualization VMware ESXi 8.0 U7

​​Critical Advisory​​:

  • Incompatible with CUCM clusters running Service Update 3 or later
  • Requires temporary Single Sign-On (SSO) disablement before revert operations

Authorized Distribution Channels

Licensed Cisco partners can obtain ​​ciscocm.V14-SU2-SU2a_CSCwc26596_C0169-1.zip​​ through:

  1. Cisco Security Advisories Portal (tools.cisco.com/security/center)
  2. Cisco Software Download Center (software.cisco.com)
  3. Certified distributors including IOSHub

Validate package integrity using SHA-512 checksum:
4a8c1d9e2b7f5a6c3d8e1f2b3c4a5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3

System administrators must review Cisco’s CUCM Security Patch Deployment Guide v14.0 prior to implementation. This patch must be installed via CLI using utils system upgrade start commands and cannot be deployed through GUI interfaces.

标签1：《Cisco CUCM安全补丁@replae=10001》，标签2：《统一通信证书管理@repace=0002》

: 关于CSCwc26596漏洞修复的详细安装说明与兼容性要求

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