14.3.11213.9000 Te...: Symantec Endpoint Protection

Broadcom has released SEP 14.3 RU9 and is actively pushing customers to Symantec Endpoint Security Complete (SESC) , the cloud-native version. Build 14.3.11213.9000 reached End of Standard Support in April 2023. Unpatched installations are vulnerable to CVE-2023-23415 (an ICMP remote code execution flaw in the firewall driver) and CVE-2024-26327 (a quarantine bypass).

SEP 14.3.11213.9000 is a targeted maintenance update intended to improve stability, compatibility, and protection efficacy for enterprises running the 14.3 branch. Proper planning—testing, staged rollout, signature verification, monitoring, and a rollback plan—will minimize disruption and ensure continued endpoint protection. For precise installation instructions, compatibility matrices, and full lists of fixed issues, consult the official release notes and knowledge-base from the vendor. Symantec Endpoint Protection 14.3.11213.9000 Te...

: Protection has been broadened to cover additional client file paths, making the security agent itself more resilient against being disabled by malware. Broadcom has released SEP 14

: Allows for isolating compromised or at-risk Mac devices from the network. SEP 14

SEP 14.3.11213.9000 represents a mature, battle-tested release in the on-premise SEP lifecycle. While Broadcom (current owner of Symantec Enterprise) has moved focus to , this version remains a valid choice for air-gapped networks, regulated industries, and IT teams requiring deterministic control over update cycles.