Symantec Endpoint Protection 14.3.12154.10000 P... | Reliable

Deep Dive: Symantec Endpoint Protection 14.3 Build 12154.10000

Symantec Endpoint Protection (SEP) 14.3 MP1 (Build 14.3.12154.10000) represents a significant milestone in the evolution of Broadcom’s enterprise security strategy. Following Broadcom’s acquisition of Symantec, this build series focused heavily on modernizing the agent infrastructure, improving cloud integration, and refining the Advanced Machine Learning (AML) engines that drive the platform’s reputation-based protection.

This specific build is widely regarded as a stability cornerstone for the 14.3 branch, bridging the gap between legacy on-premise management and the modern Information Centric Security approach.

Performance Benchmarks

Third-party testing (AV-Comparatives, August 2021) of SEP 14.3.12154.10000 on a standard Windows 10 20H2 (Intel i5, 8GB RAM, SSD) showed:

• Boot time impact: +3.2 seconds (versus no AV).
• File copy (1GB mixed files): +8% overhead.
• Memory footprint: ~180 MB (ccSvcHst.exe) + ~90 MB (Rtvscan.exe).
• Offline detection rate (new malware): 94.7% (using SONAR + AML).

Compare to SEP 14.2: 12% faster scan completions for archive files (.zip, .7z). Symantec Endpoint Protection 14.3.12154.10000 P...

Introduction

In the ever-evolving landscape of cybersecurity, endpoint protection remains the last line of defense between your organization’s data and modern threats. Broadcom’s Symantec Endpoint Protection (SEP) has long been an industry staple, and version 14.3.12154.10000—part of the 14.3 Release Update 1 (RU1) cycle—represents a critical milestone. This build focuses on hardening security, improving performance, and streamlining management for hybrid work environments.

Released in late 2020 (with ongoing updates through 2021), this specific build addresses vulnerabilities in earlier 14.x versions while introducing compatibility with Windows 10 20H2, Server 2022, and macOS Big Sur.

Known Issues & Workarounds

No software is perfect. Administrators have reported the following with this build: Deep Dive: Symantec Endpoint Protection 14

| Issue | Symptom | Workaround | |-------|---------|-------------| | High CPU after Windows Update | ccSvcHst.exe spikes to 50%+ | Exclude C:\Windows\CbsTemp from real-time scanning | | Mac agent kernel panic on Big Sur 11.3+ | System freezes during sleep | Update to SEP 14.3 RU2 (build 14.3.211.5212) or later | | SEPM login loop after upgrade | Admin page redirects to login | Clear browser cache and restart SEPM services (tomcat, semwebsvcs) | | Conflict with CrowdStrike Falcon | Block of kernel drivers | Add mutual exclusions: disable SEP’s “System Isolation” if Falcon is present |

Note: Broadcom has officially declared end of support for Windows 7 without ESU as of January 2023, even if using this build.

Troubleshooting highlights (common pain points)

• Post-upgrade high CPU or memory: check SEP scan scheduling, client hooks, and look for conflict with other security agents.
• LiveUpdate failures: verify proxy auth, certificate trust, and that SEPM can reach Symantec CDN endpoints or your internal update mirror.
• Client disconnects from SEPM: inspect firewall rules, certificates, and time/clock skew between clients and SEPM.
• Application compatibility breakage: temporarily enable Application and Device Control exceptions for impacted apps while developing a policy fix.

2. Version context and build specifics

• SEP 14.3 is part of the 14.x major series; builds in the 14.3 branch include incremental updates, bug fixes, platform support changes, and security hardening.
• Build 14.3.12154.10000 indicates a particular maintenance release; specific changes in that build typically include:
  • Bug fixes addressing client stability, update delivery, and management console issues.
  • Updated virus definitions and detection engine updates.
  • Compatibility patches for recent OS updates and third-party software.
  • Possible security fixes (privilege escalation, memory corruption) — consult vendor advisories for CVE details.
• For exact change-log, hotfix list, and CVE references for build 14.3.12154.10000, consult official Symantec/NortonLifeLock product release notes and security advisories.

1. Advanced Machine Learning (AML) v2.5

Unlike the v2.0 in 14.2, this build includes a more aggressive PE (Portable Executable) scanner that reduces false positives for developer tools while catching packer-based malware. Boot time impact: +3

9. Uninstalling / Removing This Build

Use the standard Add/Remove Programs → “Symantec Endpoint Protection” → Uninstall (requires Tamper Protection password if set).

For bulk removal:

smc -stop
msiexec /x GUID /quiet

(Get GUID from HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall)

14. Where to find official technical details

• Consult vendor release notes, product documentation, and security advisories for the exact changelist, CVEs, and supported-platform matrix for build 14.3.12154.10000.