If you encounter issues while deploying build 14.3.12154.10000:
If you are deploying or running this version, you benefit from:
Per Broadcom’s advisory SYMSA-2020-012, this build fixed:
It also added SMB signing enforcement for management communications to prevent NTLM relay attacks.
If you want, I can expand any section (detailed deployment steps with commands, SEPM sizing calculator, client installation scripts, or specific CVEs and changelog for build 14.3.12154.10000).
(functions.RelatedSearchTerms)
Symantec Endpoint Protection 14.3.12154.10000 (also known as version 14.3 RU10) is a critical security update released by Broadcom on February 3, 2025. This version introduces several infrastructure improvements and security enhancements designed to protect enterprise environments from modern "Living Off the Land" (LOTL) attacks and ransomware. What’s New in Version 14.3 RU10?
The 14.3.12154.10000 build brings several notable changes to management and client-side protection:
On-Premises Adaptive Protection: Administrators can now manage Adaptive Protection directly through the Symantec Endpoint Protection Manager (SEPM) instead of relying solely on the cloud console. Symantec Endpoint Protection 14.3.12154.10000 P...
Mandatory Uninstallation Passwords: By default, a site-level password is now required to stop the client service or uninstall the software. This prevents unauthorized removal by users or malware, though administrators can disable this for automated deployments.
Expanded OS Support: This release adds official support for Windows Server 2025.
Tamper Protection Improvements: Enhanced coverage for additional client paths helps prevent attackers from disabling security services. Key Technical Fixes
This build addresses several stability issues identified in previous versions:
Intermittent UI Lag: Fixes an issue where the client user interface would become unresponsive.
Definition Handling: Improved how the system applies new security definitions while a scan is currently in progress.
Disk Space Optimization: Resolves a bug where the SymQual process would consume excessive disk space following third-party application crashes. System Requirements
To ensure stable performance, Broadcom Technical Documentation specifies the following for SEPM and Windows clients: Minimum Requirement Recommended Processor Intel Pentium Dual-Core (or equivalent) 8-core or greater RAM 2 GB available 8 GB or more Hard Drive 40 GB available 100 GB - 200 GB Display 1024 x 768 1024 x 768 or larger For exact change-log, hotfix list, and CVE references
Note: If running Microsoft SQL Server on the same machine as the SEPM, a minimum of 8 GB RAM is required. Installation and Upgrade
For most environments, upgrading to 14.3.12154.10000 only requires updating the Symantec Endpoint Protection Manager; it is not always mandatory to immediately update all clients to maintain protection, though it is recommended for new features.
Symantec Endpoint Protection OS | Specs, reviews and EoL info
Technical Overview: Symantec Endpoint Protection 14.3 RU10 (Build 14.3.12154.10000) Symantec Endpoint Protection (SEP) version 14.3.12154.10000 , also known as Release Update 10 (RU10) , was released on February 3, 2025
. This version represents a critical maintenance and feature update for Broadcom's endpoint security platform, focusing on enhanced protection against modern attack techniques and platform modernization. Core Security Enhancements
The RU10 release introduces several key features designed to reduce the attack surface and harden client-side security: Adaptive Protection Integration
: Administrators can now manage Adaptive Protection policies entirely within the on-premises Symantec Endpoint Protection Manager (SEPM), rather than relying solely on the cloud console. This feature uses global threat telemetry and behavioral analysis to block "Living off the Land" (LotL) attacks. Mandatory Uninstallation Passwords
: For improved protection against malicious removal, a site-level default client password is now required. Certain legacy options to bypass these passwords have been removed to ensure consistent security posture. Enhanced Detection Engines If you encounter issues while deploying build 14
: Integration with the Windows Antimalware Scan Interface (AMSI) has been expanded, improving the detection of malicious scripts and fileless threats. Management and Platform Updates
Broadcom has updated the underlying architecture to support current enterprise operating systems and infrastructure: OS Support : RU10 adds official support for Windows Server 2025 Deprecated Systems : Support for legacy systems, specifically Windows Server 2012 Windows Server 2012 R2 , has been dropped in this version. Component Upgrades
: Critical third-party management components have been updated for security and performance, including Apache httpd, Apache Tomcat, OpenSSL, and PHP. Scripted Uninstallation
: A new option allows administrators to disable password requirements specifically for batch uninstallation via PowerShell or command-line scripts, facilitating large-scale migrations. Critical Fixes and System Stability
Build 14.3.12154.10000 addresses several stability issues observed in previous 14.3 iterations:
Resolves intermittent unresponsiveness of the Client User Interface.
Fixes an issue where Tamper Protection and Intrusion Prevention might appear as "malfunctioning" immediately after system startup. Addresses a known bugcheck (BSOD) error (80) related to the SymEvent64x86.sys Deployment and Versioning
Users can verify their current installation by checking the build number; 14.3.12154.10000
is the specific identifier for the RU10 base release. Subsequent patches, such as 14.3 RU10 Patch 1 (14.3.12167.10000)
, have since been released to address further specific incidents.