Symantec Endpoint Protection 14.3.12154.10000 P... Here

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).

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If you are managing an environment with this version:

Per Broadcom’s advisory SYMSA-2020-012, this build fixed: Symantec Endpoint Protection 14.3.12154.10000 P...

It also added SMB signing enforcement for management communications to prevent NTLM relay attacks.

Symantec Endpoint Protection 14.3.12154.10000 is a solid, mature maintenance release for organizations running on-prem SEP with moderate security needs. It’s not the newest (Broadcom is now at 14.3 RU9+), but it offers stability if you’ve already qualified it.

Key takeaway: If you are on an older version (14.2 or earlier), upgrading to 14.3.12154.10000 brings substantial security gains. However, if you are planning new deployments, skip to the latest 14.3 RUx build to avoid known issues fixed in later patches. For exact change-log, hotfix list, and CVE references

Have you encountered any specific issues with this version? Drop your experience below — the admin community always appreciates real-world data.

While fully-fledged EDR requires Symantec EDR (formerly SEP Cloud), build 14.3.12154.10000 introduces local event logging in EDR-compatible JSON format. This prepares on-prem customers to feed logs into a SIEM or the Broadcom EDR appliance.

As of 2026, this build is three years old from a patch perspective. Broadcom has released SEP 14.3 RU3 (build 14.3.558.0000), RU4, and RU5 (14.3.11613.2000) with critical updates including: If you want, I can expand any section

Recommended upgrade path per Broadcom:

SEP 14.3.12154.10000 → 14.3.8264.5000 (RU4) → 14.3.11613.2000 (RU5)

Do not attempt to jump directly to 14.3 RU5 without consulting the release notes; intermediate database schema changes may break SEPM.