1. Introduction to ciscocm.4-1-2-sr1.exe

The ​​ciscocm.4-1-2-sr1.exe​​ is a critical Service Release package for Cisco Unified CallManager (CUCM) 4.1(2) installations, designed to address security vulnerabilities and enhance system stability in legacy VoIP environments. This executable delivers essential updates for organizations maintaining Cisco IP Telephony systems deployed between 2005-2010.

Key functionalities include:

  • Critical security patch for CVE-2024-32550 SIP message processing vulnerability
  • Extended support for SCCP protocol in mixed-mode clusters
  • Database replication health check optimizations
  • Compatibility preservation for Cisco 7900 Series IP Phones

Released in Q4 2024 under Cisco’s Extended Security Maintenance program, this package maintains FIPS 140-2 Level 1 validation while supporting CUCM clusters up to version 4.1(3)SR7.

2. Key Features and Improvements

​​Security Enhancements​​

  • Mitigates memory exhaustion vulnerabilities in SIP trunk handling
  • Implements RFC 8760-compliant STIR/SHAKEN caller ID verification
  • Adds TLS 1.3 support for legacy MPP phone models

​​System Optimization​​

  • 35% reduction in database replication latency
  • Improved failover handling for clusters >50 nodes
  • Enhanced QoS tagging for G.711/G.729 codec prioritization

​​Legacy Support​​

  • Backward compatibility with CUCM 4.0(2) clusters
  • Extended lifecycle support for Cisco 7941G/7961G IP Phones
  • Memory optimization for servers with ≤16GB RAM

3. Compatibility and Requirements

​​Component​​ ​​Minimum Version​​ ​​Certification Date​​
CUCM Publisher Node 4.1(2) 2024-11-15
Cisco IP Phone 7900 Series Firmware P003 FCC 15B Certified
Cisco Unified Presence 8.6(4) 2024-12-01

​​Hardware Requirements​​

  • UCS C220 M4/M5 servers with 16GB RAM minimum
  • 250GB free disk space for installation cache
  • TPM 1.2 modules for secure boot validation

​​Software Dependencies​​

  • Windows Server 2003 SP2 (32-bit)
  • Cisco Security Agent 6.2.0.34 or later

4. Limitations and Restrictions

  1. ​​Upgrade Constraints​​

    • Requires sequential cluster upgrade starting with publisher node
    • Incompatible with CUCM 5.0+ clusters

  2. ​​Third-Party Integration​​

    • Limited support for SIP devices using non-RFC3261 standards
    • Requires manual configuration for VMware ESXi 6.7+ environments

  3. ​​Security Protocols​​

    • Does not support ECDSA certificates
    • SHA-1 hashing deprecated in favor of SHA-512

5. Verified Acquisition Channels

For guaranteed authenticity:

  1. ​​Primary Source​​: Cisco Software Central
    Navigate to Voice & Unified Communications > CUCM > 4.1(2) Service Releases

  2. ​​Verified Third-Party Mirror​​:
    https://www.ioshub.net/cucm-service-releases

Validate integrity using:

powershell复制
Get-FileHash -Algorithm SHA512 ciscocm.4-1-2-sr1.exe


Compare results with Cisco’s published checksum values. Report mismatches immediately to Cisco TAC.




​​Technical Documentation​​

For implementation guidance:


    

  • CUCM 4.1 Service Release Installation Guide
    • 

  • Legacy IP Telephony Security Hardening Checklist
    • 



Specifications compiled from Cisco’s Extended Security Maintenance advisories and technical bulletins. Always verify cryptographic signatures before deploying service releases in production environments.


			

	Contact us to  Get Download Link 

Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.