CVE-2026-56413: Stonefly Storage Concentrator

Critical severity, CVSS 10.0. EPSS: 4.2% chance of exploitation in the next 30 days.

Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens on TCP port 9000 by default and accepts custom network packets to perform device actions. An unauthenticated remote attacker can send a specially crafted packet containing a malicious payload that is processed without adequate sanitization, resulting in arbitrary command execution with root-level privileges.

Affected products

• Stonefly Storage Concentrator: before 8.0.4.29 (fixed in 8.0.4.29)
• Stonefly Storage Concentrator Virtual Machine: before 8.0.4.29 (fixed in 8.0.4.29)

Published 2026-06-30. Last modified 2026-07-01.