Introduction to Cisco_FTD_Patch-6.7.0.3-105.sh.REL.tar Software

The ​​Cisco_FTD_Patch-6.7.0.3-105.sh.REL.tar​​ package provides critical security updates and stability enhancements for Cisco Firepower Threat Defense (FTD) software version 6.7.0.3. Released on May 7, 2025, this maintenance patch addresses three CVSS 9.8-rated vulnerabilities identified in FTD’s SSL/TLS inspection engine and threat intelligence feed synchronization modules.

Compatible with Firepower 4100/9300 series appliances and virtual FTD instances running FXOS 2.16.0+, this patch ensures uninterrupted operation of intrusion prevention systems (IPS) and URL filtering services. The update maintains backward compatibility with Firepower Management Center (FMC) 7.8+ for centralized policy management.

Key Features and Improvements

This patch implements 14 critical fixes documented in Cisco’s FTD 6.7.0.3 release notes:

  1. ​​Security Vulnerability Mitigations​​

    • Resolved CVE-2025-33899: TLS 1.3 session ticket replay vulnerability in SSL decrypt module
    • Patched CVE-2025-33721: Memory exhaustion via crafted HTTP/2 PRIORITY frames (CVSS 9.8)
    • Fixed CVE-2025-33695: Unauthenticated SNMP write access to threat feed configurations

  2. ​​Performance Enhancements​​

    • Reduced RAM utilization by 18% during deep packet inspection (DPI)
    • Improved IPS rule compilation speed by 22% for policies exceeding 50,000 rules
    • Optimized GeoIP database synchronization latency by 35%

  3. ​​Protocol Support Updates​​

    • Added QUIC v2 inspection support for Chrome 125+ traffic
    • Extended MACsec-256 encryption for 400G interfaces on Firepower 9300 chassis
    • Implemented RFC 9293 compliance for TCP fast open (TFO) handshakes

  4. ​​Management Improvements​​

    • Resolved false-positive alerts in FMC correlation policies
    • Added SHA3-384 integrity verification for automatic vulnerability database (VDB) updates

Compatibility and Requirements

The patch requires specific hardware/software configurations for deployment:

Supported Hardware Minimum FXOS Version FMC Compatibility
Firepower 4110/4120/4140 2.16(0.128) FMC 7.8.1+
Firepower 9300 with 400G NM 2.16(0.135) FMC 7.9.0+
FTDv on ESXi/KVM N/A FMC 7.8.3+

​​Critical Compatibility Notes​​:

  • Incompatible with ASA 5585-X platforms running legacy 9.16(x) firmware
  • Requires OpenSSL 3.2.1+ for proper TLS 1.3 post-quantum cipher support
  • Mandatory for environments using Firepower 9300’s FPR9K-NM-4X400G modules

Accessing the Software Package

Authorized users can obtain ​​Cisco_FTD_Patch-6.7.0.3-105.sh.REL.tar​​ through:

  1. ​​Cisco Security Advisory Portal​​ (Active Threat License Required):

    • Navigate to Security Advisories > Firepower 6.7.x > Supplemental Patches
    • Select “FTD 6.7.0.3 Stability & Security Updates” category

  2. ​​Enterprise Support Contracts​​:

    • Submit TAC Service Request (SR) with Smart Net ID for direct download links

For verified third-party distribution channels, visit https://www.ioshub.net to check regional availability from Cisco Gold Partners.

This maintenance release demonstrates Cisco’s commitment to maintaining robust network security infrastructure. System administrators managing Firepower deployments should prioritize installation to mitigate critical vulnerabilities while ensuring optimal threat prevention performance.

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