CVE-2011-0321: librpc.dll in nsrexecd in EMC NetWorker before 7.5 SP4, 7.5.3.x before 7.5.3.5, and 7.6.x before 7.6.1.2 do...

Security readout for executives and security teams

This flaw affects older EMC NetWorker backup software. A remote attacker could spoof traffic as if it came from localhost and manipulate RPC service registration, potentially disrupting backup-related services or exposing sensitive interprocess communication. The provided sources do not show active exploitation. Exposure is likely limited to organizations still running EMC NetWorker before 7.5 SP4, 7.5.3.5, or 7.6.1.2, especially where NetWorker RPC/UDP services are reachable beyond trusted backup networks. Prioritize remediation if legacy EMC NetWorker remains in production or reachable from broad internal networks. The business risk is backup disruption and possible exposure of sensitive internal service communications. Mitigation focus: Upgrade EMC NetWorker to 7.5 SP4, 7.5.3.5, 7.6.1.2, or later.; Review EMC advisory ESA-2011-003 for vendor-specific remediation guidance.; Restrict NetWorker RPC/UDP service exposure to trusted backup infrastructure..

Prepared

Jun 27, 2026, 18:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.